What should be the normal schedule of basal temperature during pregnancy. Pregnant basal temperature charts with examples and explanation Bt chart on babyblog

Even 15 years ago, the measurement of BBT was considered one of the main diagnostic methods for assessing women's reproductive health. After all, the basal temperature of a non-pregnant woman is fundamentally different from the BT of a girl “in position”. A "healthy" temperature graph is not at all the same as that of a girl with problems "in the female part."

Now this method has given way to other, more modern and accurate diagnostic methods. Gynecologists prefer to prescribe ultrasound and hormone tests to patients. However, the BT method can still tell a lot both to the girl herself and to her doctor.

How to measure BBT

• unsuccessful attempts to conceive a child over a long period of time;
• suspicion of hormonal imbalance and changes in the menstrual cycle;
• probable infertility of one of the partners;
• calculation using the schedule of the most favorable days for conception, when ovulation occurs (the release of an egg ready for fertilization from a mature follicle);
• control over the processes occurring in the body of a woman;
• diagnosis of anovulatory cycles.

BT is measured in the morning, after a good night's rest (when healthy sleep lasted at least 6-7 hours), in a state of complete rest and without getting out of bed. As a rule, the most accurate results can be obtained by measuring the basal temperature with a conventional mercury thermometer in the rectal passage, but experts also do not deny the information content of measurements obtained by measuring indicators in the oral cavity or vagina.

Based on the results of which a special schedule is drawn up. Only a qualified specialist can give a competent assessment of the basal temperature chart. However, the girl herself can understand a lot.

Cycle phases on the chart

The normal monthly cycle of a woman who is not pregnant consists of two main periods: the follicular and luteal phases. In the first phase of the cycle, which begins with the onset of menstruation, estrogen hormones are actively synthesized in the woman's body, which positively affect the maturation of the egg and the proliferation of the endothelium of the uterus. This period is characterized by consistently low BBT values ​​on the charts, therefore it is called hypothermic.

Approximately in the middle of the monthly cycle, the egg matures in the follicle. Her exit from the ovary or ovulation is accompanied by a change in the hormonal background of a woman, after which progesterone, the main hormone of pregnancy, normally begins to be produced. This biologically active substance, affecting the centers of thermoregulation in the brain, provokes an increase in temperature by about 0.4-0.6 degrees. If fertilization does not occur, progesterone levels begin to decline, menstruation begins, and the body again enters the follicular phase of the cycle.

Temperature norm

The basal temperature in the absence of pregnancy has its own characteristics, which are clearly visible on correctly drawn up charts of the period without conception. The norm is when in the first phase the temperature ranges from 36.3 to 36.6, and in the second it rises by about 0.4-0.6 and is already 36.9-37.1 degrees and above.

So, what should be the basal temperature in non-pregnant women? The non-pregnant basal temperature chart is characterized by the following features:

• decrease in BT with the onset of menstruation to the level of 36.3-36.5;
• stable level of basal temperature throughout the follicular phase;
• rise in BBT indicators about two weeks before the expected menstruation;
• the presence of ovulation retraction or a decrease in the level of basal temperature by 0.1 before the release of the sexual gamete from the ovary;
• increase in indicators during ovulation to 36.9-37.1;
• the temperature difference between the two phases should not exceed 0.4-0.5;
• a decrease in the temperature level to 36.7-36.8 one or two days before the onset of menstruation.

Naturally, the graph of basal temperature in the absence of pregnancy differs in many ways from the curves obtained as a result of measuring BBT in women who are already carrying a baby.

The main feature of the graphs without pregnancy is a decrease in the temperature level in the last few days of the cycle, that is, a decrease in progesterone activity. In addition, the basal temperature, if there is no pregnancy (unlike the indicators of women who are expecting a baby), has a two-level view, sinking in the middle of the cycle and a gradual rise in the temperature curve in its second period.

Non-pregnant woman chart

Schedule during pregnancy

Deviations from the norm

Every woman normally has monthly cycles about twice a year without the release of a mature egg, which are called anovulatory. On such charts, the line is constantly at the same level, without sinking and sharp rises. Anovulatory cycles are characterized by the following features:

• the absence of a drop in basal temperature in the middle of the cycle on the charts. The situation when is a confirmation of the absence of ovulation;
• in the second phase, no increase in temperature is recorded, since a pregnancy that synthesizes progesterone is not formed.

Graphs of basal temperature will allow you to suspect some diseases of the female genital area. Temperature jumps above 37.0 in the first phase of the cycle indicate the development of an inflammatory process in the ovaries or uterus. And with a lack of hormones, its relative increase in the first period of the cycle and a decrease in the second will be recorded.

However, it is important to remember that any deviations from the norm on the chart are just an excuse to contact a specialist. In itself, temperature measurement is only an auxiliary, and not the main method of diagnosis. Perhaps your fears are completely unfounded. Much more reliable are laboratory tests, ultrasound and other studies that your doctor will prescribe.

Realizing that there is a new life in her, a woman seeks to learn as much as possible about her situation. This is especially important for those who are anxious for any reason. Basal temperature in the early stages of pregnancy will help to monitor the process daily, to identify dangerous signs, so that the expectant mother can get help in a timely manner if necessary.

Basal temperature is another indicator of gynecological health. Due to the natural difference in its values ​​at each stage of the cycle, women are planning a pregnancy. Daily measurements and scheduling make it possible to find out the day of ovulation. Before menstruation, the value of BT reaches 36.7-36.9 degrees. By the time of egg maturation, it increases to 37-37.1. If conception did not occur, after ovulation, its values ​​decrease again. If there was no ovulation at all, then the temperature will be approximately the same throughout the entire cycle.

Basal temperature 37 is a sign of pregnancy, which appears, perhaps, earlier than others. Delayed menstruation, morning sickness and other symptoms will announce it later. In the meantime, keeping BT at this level for 2 weeks will let the woman know that she is now responsible for another life, and it's time to start providing suitable conditions for her development. And although this is not an indisputable sign of pregnancy, it can be a reason for a test, leaving bad habits that interfere with her, and establishing a normal regimen.

The norm of basal temperature after conception

A fertilized egg needs special conditions to attach to the wall. The body creates them with the help of the hormone progesterone, which begins to be produced in an increased amount compared to the previous one. With its help, the uterus prepares to accept the fetal egg, then allow the membranes, the placenta, to develop. For this reason, the basal temperature during early pregnancy also goes up, but up to certain limits.

Usually its value varies in different women from 37 to 37.3 degrees. Keeping within these limits means that the process goes without unpleasant surprises, as it should. What basal temperature in early pregnancy may depend on the characteristics of a particular organism. It is normally able to deviate from the average values, reaching 38 degrees. But to make sure that this is not evidence of any danger, it is better to visit a specialist.

Daily fluctuations in BT

Measurement of bt in early pregnancy should be carried out at the same hours in the morning. Such indicators can be trusted, since the body has rested, and no external factors have yet been able to influence it. Physical activity inherent in wakefulness, eating, emotions, even wearing clothes inevitably change its meanings. Usually, the basal temperature in early pregnancy rises above 37.3 degrees during the day, but there is no danger hidden in this. At this time, its values ​​can change every hour under the influence of the factors already mentioned.

By the end of the day, the body “digests” everything accumulated during the day, but is already preparing for rest. However, taking measurements at this time of day is just as pointless. The indicator will still be high, and it is impossible to understand whether this is caused by natural causes or health problems. Basal temperature in early pregnancy in the evening is usually about 1 degree above normal. An informative measurement at this time will be if the woman slept for at least 5 hours during the day. But it is unlikely that anyone will observe such a strange regime for all 12 weeks of the initial stage.

When and how to measure BBT

Bt during early pregnancy is measured in the morning before getting up, when the biological activity of the body is minimal. The thermometer is placed in the vagina or rectum for 2 cm and held for 3-5 minutes. During this time, the device will sense and display the actual temperature values.

Each measurement must repeat the previous one. That is, it is impossible to insert a thermometer into the vagina today, and tomorrow into the anus. And it is necessary to carry out manipulations at the same time, you can be late and rush only for an hour. The thermometer should always be the same as before.

Basal temperature is important in early pregnancy in accurate measurement. This is real if:

• Do the procedure only in a horizontal position, without turning on your side, without getting up. Sitting in bed, the woman increases the flow of blood to the pelvis. The thermometer in this case will show high values ​​\u200b\u200bthat do not correspond to reality;
• Take measurements after at least 5 hours of sleep, only in this way the readings will be correct;
• Do not have sex during the entire period of BT control. Sexual activity stimulates its increase. Or at least make sure that the interval between the measurement and the act is at least half a day;
• Do not take medication. Most of them will distort the picture, and the indicator may be significantly higher or lower than normal values. But the basal temperature is controlled in the early stages of pregnancy due to the likely threat to the condition. In this case, there may be no danger, and the number on the thermometer will show what is;
• Have breakfast after measurement. Food also affects the value of the indicator;
• Do not be sick. Even a slight runny nose can change the value of BT.

Why you need a schedule

A BBT schedule during early pregnancy is necessary if a woman seriously decides to track this indicator. As the fetus develops, various changes occur in the mother's body, mainly related to hormones. It is not surprising that the basal temperature in the early stages of pregnancy is also unstable, the graph will prove this. It usually looks like this:

• On the day of fertilization of the egg, the value balances between 36.4 and 36.7 degrees;
• For the next 3-4 days, it rises by 0.1 degrees daily and reaches 37;
• For another 2-3 days, the value of the basal temperature remains the same;
• On the day of implantation of the ovum into the uterine mucosa, it decreases to 36.5-36.6 degrees;
• The next 2-3 days, the values ​​​​of the indicator gradually go up, reaching 36.8-37 degrees;
• For about 2 weeks, the numbers on the thermometer can range from 36.7 to 37.1. But the values ​​should not be lower than those observed on the day of ovulation.

The schedule of basal temperature during pregnancy in the early stages should include not only the numbers of the indicator and the days of the cycle, but also the accompanying circumstances. BBT values ​​can be affected by illness, medication, stress. The attending physician should learn about each of them in order to have a complete picture of the development of pregnancy.

When the basal temperature deviates from the norm

It is worth saying that an increase in basal temperature and keeping it at certain values ​​is not at all an absolute sign of pregnancy. Sometimes it can mean something completely different. But if a woman is convinced by a test that conception has occurred, it is not always necessary for her to control this indicator. Usually, the doctor insists on measuring BBT for problems with gestation in the past in order to catch them at an early stage. So more opportunities to neutralize negative factors.

Why is the basal temperature too high

An excessive increase in basal temperature is due to the inflammatory process occurring in the body. In most cases, it is associated with the reproductive sphere, but not always.

Another reason for too high BBT may be an ectopic pregnancy. The fetal egg, despite the abnormal localization, develops, which means that progesterone is produced in the usual amount for pregnancy. At the same time, there is an inflammatory process in the body that can increase both body temperature and BBT.

A woman needs to listen to the sensations in the lower abdomen and monitor the discharge. If brown instead of transparent ones come out, an ultrasound of the fallopian tubes and the abdominal cavity should be done.

Possible threat of interruption

A decrease in basal temperature in early pregnancy occurs with the threat of its interruption. The main reason for this in most cases is the lack of progesterone. The hormone provides the creation of conditions for the development of the fetal egg: loosening the upper layer of the inner lining of the uterus, fixing the embryo in it.

Thanks to him, the basal temperature also rises in the early stages of pregnancy, 37 is its average value for the first 2 weeks after conception. A lower indicator is a reason to take measures to prevent the rejection of the ovum, which may begin soon. If, in addition, a woman feels pain in her abdomen, notices blood-colored discharge, she needs help immediately.

Frozen pregnancy

Low basal temperature in early pregnancy can also be a sign of fetal fading. This means that the embryo has stopped developing. Why this happens, we can only speculate. But you need to know about such a situation, since the fetus does not always come out on its own. It is necessary to remove it, and the sooner the safer for the woman. For a short period, this is done using the vacuum method, and after recovering, after a while, you can plan a pregnancy again.

Stopping the development of the embryo is accompanied not only by a decrease in BT, but also by other symptoms, the main of which is the disappearance of other signs of its existence. In a woman, the increase in the mammary glands also stops. In this case, the level of progesterone also falls, because the corpus luteum no longer needs to produce it.

Is there a low BBT during normal pregnancy

The norm of basal temperature in the early stages of pregnancy is rather arbitrary. It is not at all necessary that the body will demonstrate its values ​​​​as in a textbook. Its individual characteristics may turn out to be such that with a normally developing pregnancy, the indicator will not reach the average for all 12 weeks, when it makes sense to measure it. And low bt during pregnancy in the early stages will not interfere with bearing and giving birth to a healthy child.

The indicator must be monitored and compared over time. If at other times its values ​​\u200b\u200bare also not the same as the norm, you should not take this as a threat to pregnancy. For example, with BT during ovulation less than 36.4, the indicator in the first 2 weeks may not reach the milestone of 37 degrees.

Measurement of basal temperature is useful for the first 3 months, when its values ​​are informative. Beyond that, they don't matter. But in the first trimester, you should not overestimate them. Basal body temperature only takes on meaning in the context of other signs. Therefore, for any discrepancies with the average numbers, you should not worry, but it is better to go to the antenatal clinic to make sure that everything is in order.

When pregnancy occurs, women need to constantly measure their basal body temperature and build a graph. If a pregnant woman for some reason does not know how to do this, then you can visit the relevant pages on the Internet, where there is a graph of basal temperature during pregnancy with a transcript. A gynecologist usually explains to a pregnant woman how to measure BBT correctly and how to build a schedule later.

Ovulation. basal temperature. Schedule. Pregnancy.

What you need to know about the temperature in the absence of pregnancy? It is desirable to build a graph of basal temperature without pregnancy from clearly distinguishable two phases - follicular and luteal. In the 1st phase of the cycle, subject to the correct measurement of body temperature, the thermometer usually shows 36, 4 - 36 and seven, and these parameters are normal.

By the middle of the cycle, the temperature usually decreases, but a day later it suddenly rises - by 4 or 6 tenths of a degree. If at the same time it is as much as 37 or even more degrees, this is normal. Then, in place of the bursting follicle, a corpus luteum is formed. Insufficiency of the corpus luteum is the cause of the development of pathologies of pregnancy and the appearance of miscarriage.

Elevated temperature can persist up to 12 - 26 days, but before a new menstrual cycle, it falls. This dynamic is typical for healthy women who do not have hormonal problems.

Hooray! My pregnant basal temperature chart

It can show how pregnant women make charts of basal temperature examples forum. They will be significantly different from the "normal". So, the schedule of basal temperature during pregnancy before the delay is practically no different from the "non-pregnant" schedule.

Table of basal temperature during pregnancy

Women should be aware that during pregnancy, the persistence of the corpus luteum in the ovary is found for quite a long time. The corpus luteum is necessary for the production of progesterone, without which the normal course of pregnancy is impossible. The graph of basal temperature during pregnancy by day shows how the activity of the uterus occurs. If such a hormone is not enough, then a woman may have a miscarriage. Progesterone contributes to normal breast function.

Graphs of basal temperature during pregnancy examples indicate that an elevated basal temperature can persist throughout the entire period of gestation of the embryo. Graphs of basal temperature during pregnancy photos show the dynamics of changes in the processes occurring in the female body. Around the 16th week, progesterone is synthesized in the placenta, and the corpus luteum is slowly reduced

A woman should carefully and constantly measure her basal temperature during pregnancy. It can be suspected by the fact that BBT does not decrease before the start of the proposed new cycle. Shows what the basal temperature chart looks like during pregnancy, the forum is the most common options for changing one of the main indicators of the female body. If ovulation occurs, then the basal temperature schedule during pregnancy under normal conditions is kept elevated. If the temperature is kept at 37 and above, then everything is normal in the woman's body. In some cases, there are unusual pregnant graphs of basal temperature.

It is necessary to take a pregnancy test if the BT parameters indicate a suspected pregnancy. This can be done at home as well. Sometimes it happens that with a positive test, the basal temperature fluctuates. In such a situation, you must urgently consult a doctor.

When diagnosed with pregnancy at a low basal temperature, the graphs do not correspond to the normal indicator. And this is the reason for contacting an obstetrician-gynecologist.

A woman should remember that a week after ovulation, there may be a slight decrease in temperature. This happens on the condition that the fertilized egg is introduced into the uterine mucosa.

When should you visit a gynecologist? A woman should be aware that a pregnant graph with a low basal temperature is a sign of pathology. To make a diagnosis, it is very important that a woman measures her basal temperature every day and for several months. It is recommended that you see a doctor if you have these symptoms.

1. Decrease in basal temperature. This is especially important when a decrease in Bt was observed throughout the entire monthly cycle.
2. An increase in temperature throughout the entire monthly cycle (this may indicate the development of hyperprolactinemia).
3. A small difference between the phases of the monthly cycle (that is, less than 4 tenths of a degree).
4. A slow rise in temperature in the middle of the cycle (this may indicate insufficiency of the corpus luteum).
5. Long duration of the 1st phase (if it is more than 17 days).
6. Shortening of the second phase (normally it should be at least twelve days).
7. Delay without pregnancy.
8. Long (more than 35 days) and short (less than 21 days) menstrual cycle.

Charting a basal temperature is necessary for all women planning a pregnancy. The measurement procedure is simple and easy, so it should be carried out when the period of gestation of the embryo begins. Provided that the woman carefully follows all the recommendations of the doctor, the data obtained during the measurement will be reliable.

Sometimes, based on the results of measurements, the doctor may recommend that the patient undergo an additional examination, take tests, and so on. In no case should one avoid analyzes, because only they will give a real picture of the processes occurring in the body. For couples planning a pregnancy, all such tests will be very necessary.

Please note that when changing BT, you do not need to take any self-treatment measures. It is very harmful and can lead to disastrous consequences. Self-administration of hormonal medications can cause infertility in women, which can be very difficult to get rid of.

And one more important note: it is useless to measure basal temperature during the day or in the evening. For this, only the morning time is needed.

Basal temperature (BT) is the minimum temperature observed after sleep, when a person is fully rested.

In the female body basal temperature changes depending on any processes occurring in it.

Changes in basal temperature when planning pregnancy are considered especially relevant, since it is these indicators that can help calculate the days of ovulation and predict the onset of pregnancy in the early stages.

BBT increases during pregnancy. When within 16 days after the onset of ovulation it exceeds 37 degrees - this may indicate pregnancy. Usually at this time temperature can vary from 37 to 37.6 degrees and above. The reason for the increase in BBT is an increase in the level of progesterone in the blood.

Usually, before the onset of ovulation, there is a decline, but if the baby is conceived, this will no longer happen. Therefore, it is important to measure your basal body temperature regularly.

Even after the onset of pregnancy, doctors recommend continuing to calculate the basal temperature, since these indicators can catch the slightest changes in the condition of the fetus, up to the fading of pregnancy and miscarriages.

It is important to study BBT before pregnancy, because only in this way a woman can catch all possible changes.

Non-pregnant BBT rates

Normal non-pregnant BBT curve readings suggest that at the end of each monthly cycle, the readings will have a biphasic separation. That is, in the first half of the cycle, before ovulation, the temperature is not higher than 36.8 degrees, a in the second half of the cycle, the temperature will rise to 37 degrees. Wherein before ovulation, BBT drops sharply by at least 0.4 degrees.

After the onset of ovulation, the indicators rise for 14 days, after which they decrease again by the beginning of the next cycle.

It is worth remembering that there some factors that affect changes in BBT. They should be taken into account and indicated in the graph:

• stress;
• fatigue;
• climate change;
• colds with fever;
• alcohol intake;
• sexual intercourse a few hours before measuring BBT;
• short sleep;
• non-compliance with the rules for measuring BT;
• taking contraceptives;
• using a new thermometer.

BT charts with low temperature

When pregnancy has already begun, BT schedules with its decrease in the second half of the cycle may be evidence lack of progesterone in the body and a high probability of miscarriage.

If the graph has such indicators, then it is urgent to visit a doctor to diagnose the problem and prescribe the appropriate treatment. It usually consists of prescribing drugs with artificial progesterone. Only in this way will a woman be able to maintain her current pregnancy.

Such a decrease in temperature may indicate a missed pregnancy. This problem is revealed when contacting a doctor. An ultrasound is performed, on the basis of which the doctor determines the viability of the fetus. If the diagnosis is confirmed, curettage of the uterus is prescribed for medical reasons.

Chart examples

Sample basal temperature charts can help women who are planning a pregnancy to determine the day of ovulation, the likelihood of conception and the onset of pregnancy.

in a non-pregnant woman.

Examples of basal temperature charts.

An example of a basal temperature chart.

An example of a graph of changes in basal temperature.

A woman needs to start keeping a schedule of basal temperature a few months before pregnancy. Only in this way will she be able to accurately determine all the smallest nuances regarding changes in BBT and determine the days of ovulation, implantation retraction and the onset of pregnancy.

BT with implantation retraction

When studying the graphs of the basal temperature of pregnant women, many expectant mothers are faced with such a term as implantation retraction. He characterizes a sharp decrease in BBT 5-7 days after the last ovulation. However, then the temperature abruptly returns to 37 degrees.

This indicates the fixation of an already fertilized egg in the wall of the uterus. Therefore, such a jump on the graph may be a sign of pregnancy. Confirmed egg implantation in the uterus slight bleeding and pulling pains, as during menstruation, in the lower abdomen.

With the above symptoms and without an increase in basal temperature after sinking, there is a high probability of miscarriage, so the expectant mother should visit a doctor urgently.

Temperature when taking Duphaston and other drugs

There is an opinion that some drugs taken before pregnancy can affect changes in BBT. Especially often questions arise when taking synthetic progesterone.

Duphaston is quite famous artificial progesterone drug. Its impact on changing BT schedules is not clear and not fully explored.

According to the reviews of some women, when taking Duphaston and other similar drugs, there is a change in the BT schedule to the reverse. That is, in those moments when the temperature should rise - it decreases and vice versa. Doctors explain such phenomena as:

• individual characteristics of the organism;
• irrationality of the appointment of Duphaston.

In the first case, it is assumed that changes in BT schedules are an individual feature of the organism of this particular woman. In the second case, the reason for the change in the basal temperature schedule is the incorrect prescription of the drug. This is often the sin of both some inexperienced doctors and women who self-medicate.

In addition to Duphaston, changes in BT can be provided by drugs such as:

• Utrozhestan;
• Injesta;
• Triderm;
• Hydrocortisone;
• Tri-regol;
• Nasonex;
• Rigevidon;
• Noretin;
• Locoid;
• Diana 35;
• Climodien;
• Yarina;
• Jeanine;
• Marvelon;
• Novaring;
• Gineprison;
• Femiwell.

However, in addition to drugs with artificial progesterone, changes in BBT can be affected painkillers, anti-inflammatory drugs, some psychotropic and sleeping pills.

When maintaining basal temperature, it is important take all measurements at the same time without changing his position after sleep, without going to the toilet and without eating. Only in this way all changes are considered correct and, based on them, you can monitor the current pregnancy or plan it.

The graph of basal temperature during pregnancy reflects the direct dependence of rectal indicators on the influence of hormones at different periods of the menstrual cycle.

MC has 2 phases.

1. Follicular - the first half proceeds under the influence of estrogen. During the period of maturation of the egg, temperature fluctuations are allowed within the range of 36.4–36.8 ° C.
2. Luteal - ovulation occurs. That is, the bursting follicle is replaced by the corpus luteum, which synthesizes progesterone. An increase in hormone production provokes an increase in temperature by 0.4–0.8 ° C.

In a normal state (before pregnancy), the basal temperature drops slightly before menstruation. A jump in indicators to a minimum downward is noted before ovulation.

An example of a normal two-phase temperature graph:

normal example

The middle (or overlapping) line serves to make the curve easier to read. It is carried out at the points of six temperature values ​​​​before ovulation in the follicular phase.

The first 5 days of menstruation, as well as situations in which external factors influenced, are not taken into account. Consider a photo that shows what a finished chart looks like with real temperature readings during pregnancy:

The woman celebrated every day

The curve shows that BBT does not decrease before menstruation. If, against the background of increased rectal temperature, there is a delay in menstruation, then the pregnancy has taken place.

To confirm the findings, it is necessary to conduct a test and come for a consultation with a gynecologist. Be sure to show your temperature chart to your doctor.

Signs of pregnancy and its absence on the BBT chart

At conception, the basal temperature rises. The indicators do not decrease before the onset of menstruation and remain throughout the entire gestation period.

You can determine pregnancy according to the schedule by the temperature jump on the 7-10th day after ovulation - this is the moment the fertilized egg is introduced into the inner lining of the uterus.

Sometimes early or late implantation is observed. Even the most informative ultrasound examination cannot reliably track this process.

A sharp decrease in temperature on the graph in the second phase is called implantation depression. This is one of the first and most frequent signs that is noted on the basal chart with a confirmed pregnancy.

This phenomenon is due to two reasons.

1. The increased production of progesterone increases the temperature, which gradually decreases closer to the middle of the luteal phase. At conception, the corpus luteum begins to actively synthesize the hormone, which leads to fluctuations in values.
2. If pregnancy occurs, then a large amount of estrogen is released, which causes a sharp decrease in temperature in the scheme.

The connection of hormones with different functions leads to a shift, which manifests itself in the form of an implantation depression on a personal map.

This phenomenon cannot be reflected by any other study other than the basal temperature curve. Example:

Implant retraction

Please note that with a completed pregnancy, starting from the 26th day of the menstrual cycle, the schedule becomes three-phase. This is due to the increased synthesis of progesterone after implantation of the egg.

Confirmation of the introduction of the embryo may be a slight discharge that disappears in 1-2 days. This is implantation bleeding, which is caused by damage to the endometrium.

Nausea, breast swelling, intestinal disorders and other similar signs are not reliable. There are cases when, even with severe manifestations of toxicosis, pregnancy did not occur.

And, on the contrary, without a single sign, the woman stated the fact of a successful conception. Therefore, the most reliable conclusions are considered to be a persistent increase in basal temperature, implantation retraction. Another sign is a delay in menstruation, subject to sexual contact during the period of ovulation.

A decrease in temperature before menstruation is a sign of the absence of pregnancy. Fluctuations in rectal numbers can be interpreted in different ways. Fever is not always a sign of pregnancy. This is possible due to inflammation of the appendages.

Each case must be compared with all the changes in the body and confirm your observations in the gynecologist's office.

It is important to record data regularly

Normal basal temperature chart during pregnancy

Keeping a BT calendar is relevant only at the very beginning, that is, in the early stages of gestation. Favorable conditions are necessary for the normal development of the embryo in the first trimester.

For this, the body of a pregnant woman begins to intensively produce progesterone. This hormone raises the temperature in the reproductive system to create a "warm" environment for the embryo.

Normally, after the onset of egg implantation, the basal temperature figures on the diagram should be in the range of 37.0–37.4 ° C.

However, in some cases, a drop to 36.9 ° or an increase to 38 ° is allowed. Such values ​​may be considered acceptable.

Unusual BT schedules during pregnancy

Normally, the temperature difference between the first and second phases should fluctuate within the allowable 0.4 ° C and above.

How to determine the average BBT? To do this, it is necessary to add up all the temperature numbers obtained during the measurement, first in period I, dividing the sum by the number of days. Then similar calculations are carried out with indicators of phase II.

Let's look at a few examples that are most common.

Anovulatory cycle

This graph shows a uniform curve without division into periods. It can be seen that BT in the luteal phase remains low, not exceeding 37°C.

In the absence of ovulation, the formation of the corpus luteum is impossible, which activates the synthesis of progesterone. There is no upswing.

If the anovulatory cycle is repeated periodically, no more than 1-2 times a year, then this is the norm. However, if the situation occurs in a row for 60 days or several months, then it will be difficult to get pregnant on your own.

Next example:

Need to consult a doctor

With estrogen-progesterone deficiency, the rectal temperature chart remains low after ovulation, up to the 23rd day of the cycle. The difference between the average values ​​is a maximum of 0.2–0.3°.

A similar curve built over several MCs indicates a lack of production of hormones important for the development of pregnancy. The consequence of the pathology may be endocrine infertility or the threat of miscarriage in the early stages.

Next example:

Possibly a disease

Endometritis is an inflammation of the inner lining of the body of the uterus. With this disease, the temperature curve reflects a decrease in indicators before menstruation and a sharp rise in values, uncharacteristic for the first phase.

Next example:

The chart is useless here.

This graph shows high readings up to 37° in the first phase. Then there is a sharp decline, which is often mistaken for an ovulatory rise. With inflammation of the appendages, it is difficult to correctly determine the moment of release of the egg.

By examples, it can be understood that it is easy to identify pathologies using a personal basal map. Of course, twins or one embryo can only be shown by ultrasound, but the conception on the BT map is determined accurately.

Graph of basal temperature for ectopic and missed pregnancy

With anembryony (fetal death), elevated rectal values ​​decrease to 36.4–36.9°C. The decrease in temperature on the graph is due to the regression of the corpus luteum and the stoppage of progesterone production.

Low values ​​in the second phase are possible due to a lack of hormones. Sometimes, with a frozen pregnancy, there is a sharp rise in temperature against the background of decomposition of the embryo and inflammation of the endometrium.

Ectopic conception by rectal indicators can not be detected. With ectopic fetal development, progesterone is produced as during normal gestation of the first trimester.

However, against the background of the growth of the embryo, there are symptoms that you should immediately pay attention to. This is an acute pain syndrome in the abdomen, discharge, vomiting, etc.

On the days of ovulation

At the same time, an inflammatory process can develop, which is usually manifested by a sharp rise in temperature to 38 ° and above.

Do not self-diagnose. Any suspicious changes in the rectal temperature chart should be reported to a doctor.