How long is it normal to delay the due date, and why is the due date delayed?

The due date is not actually an accurate date of delivery, it has a certain error, the time of this error is about two weeks, which means that the two weeks before and after the due date of delivery and the birth of the baby are considered normal, so the due date can be postponed for up to two weeks, and pregnant women do not have to worry. However, if there is no movement after two weeks after the due date, it may be that the due date is incorrectly calculated, or the fetus is abnormal.

Regardless of the reason for the delay in delivery after the due date, pregnant women should pay attention to the condition of the baby. If the fetal movement of the fetus is abnormal at this time, or the fetal heart rate monitoring is abnormal, it is necessary to understand the maturity of the embryo through color ultrasound, and take caesarean section if necessary to avoid danger to the fetus.

In fact, it is not difficult to calculate the expected date of delivery, the entire pregnancy period is 280 days, and the 280th day is the due date from the day of the last menstrual period. If you have forgotten the date of your last menstrual period, you can also ask your doctor to calculate the gestational age based on the femur length of your baby, so that you can accurately estimate the expected date of delivery.

Why is the due date delayed?？What should I do if my due date is delayed? Many expectant fathers and mothers must be very worried when they see that the due date has passed and the child has not yet come out, is there something wrong with their fetus?

Do I need to go to the hospital for surgery right away?

Regarding the question of why the due date is postponed, in fact, pregnant mothers do not need to worry too much at this time, the so-called due date is only the approximate date of the child's birth. The physical condition of the pregnant woman and other external reasons will affect the advance and postponement of the child's birth date, if the birth is earlier or 1 or 2 weeks later than the expected date of delivery, it is still considered normal. Just do a good prenatal check-up.

Only 5 out of every 100 babies come to life on time! About 40% of babies arrive late, and the latest is 42 weeks of pregnancy, so it's normal to be less than 14 days late from the due date. From 2 weeks after the due date, the function of the placenta may be weakened, which means that the fetus may begin to not receive enough oxygen and nutrients.

Many pregnant women will encounter this situation, and the baby still does not move after the due date. What happens if my due date is exceeded? In fact, it is normal to give birth within two weeks before and after the due date.

Births between 24 and 36 weeks of pregnancy are considered premature, and those born after 42 weeks are considered overdue.

If a pregnant woman has passed her due date but has not yet shown signs of labor, she must pay attention to the following:

1. Don't be too nervous and pay attention to the fetal movement. If the fetal movement is less than 3 times per hour or less than 20 times in 12 hours, or the fetal movement is weakened, you need to go to the hospital immediately for further examination, and the doctor will decide the timing of delivery according to the situation.

2. Continue to carry out prenatal examination, and give the results of the first trimester examination (such as B ultrasound, blood test, pregnancy test, etc.) and the time and results of fetal movement to the doctor, so that the doctor can check the gestational week again.

3. Strengthen prenatal examination, shorten the interval between examinations, contact the doctor at any time, inform the intrauterine fetal movement, and follow up the amniotic fluid volume with B ultrasound. If there are no abnormalities, the pregnancy can continue under close supervision.

If the expected date of delivery is postponed to 14 days later, when the clinical so-called overdue pregnancy is reached, the placenta of some pregnant women will age and the fetus will be hypoxic asphyxia, so the harm to the child is greater, and measures should be taken in the hospital in time.

The expected date of delivery is calculated from the first day of the last menstrual period, and the estimated date of delivery is obtained by subtracting 3 months or adding 9 or 7 to the date.

The due date is 40 weeks of gestation, not all pregnant women will give birth naturally on the due date, it is only an estimated time, and it is normal to have to advance 1-2 weeks and postpone 1-2 weeks. However, it should not exceed 42 weeks, which is the post-term pregnancy, and if the placenta function deteriorates after 42 weeks, the amniotic fluid decreases, and the fetus may have intrauterine hypoxia.

In addition, for women with irregular menstrual cycles, the expected date of delivery cannot be estimated from menstruation alone, and the due date must be verified by early ultrasound. Ultrasound at 7-8 weeks of pregnancy and 12 weeks of pregnancy is more accurate for estimating the expected date of delivery, and the estimate of the expected date of delivery will be more accurate by combining menstruation and ultrasound.

Diet during pregnancy should follow the 12345 principle:

For pregnant mothers, the most scientific and simple diet method is the "diet", that is, to ensure 1 cup of milk, 2 eggs, 3 taels of meat, 400 grams of staple food, 500 grams of vegetables and fruits every day. This method is summarized on the basis of the balanced diet pagoda of Chinese residents, and it can be said that it has achieved the highest level of nutrition during pregnancy: comprehensive, balanced and sufficient.

12345 "On the diet, 1 cup of milk can be milk, yogurt, cheese, or 100 grams of tofu. Meat should be appropriately selected more poultry and aquatic products, and less pork and pork ribs with high fat content should be eaten. Meat intake must be controlled.

Among the 500 grams of fruits and vegetables, vegetables should be the main ones. In particular, eat more red, green, and yellow vegetables and dark yellow fruits, which are richer in nutrients such as iron. Vegetables can replace fruits, whereas fruits cannot replace vegetables.

The expected date of delivery should be 280 days or 40 weeks from the first day of the last menstrual period. There are fluctuations before and after. Calculation method:

Due date month Month 9 or -3 of the first day of the last menstrual period, Date of due date Number of days on the first day of the last menstrual period 7In this way, the calculated time is the due date.

For pregnant women with irregular menstruation, the expected date of delivery can be estimated through the following comprehensive analysis. 1. Inquire in detail about the usual menstrual situation, if the pregnant woman's menstrual cycle is long, the expected date of delivery can be postponed for the corresponding number of days. 2. According to the ovulation date of the increase in basal body temperature before pregnancy, 15 days forward is the expected date of delivery for the last menstruation.

3. The husband and wife live separately, which can be calculated according to the date of the intercourse. 4. Estimated according to the time of the onset of early pregnancy reaction (the 6th week of pregnancy). 5. For those who do ** examination in the first trimester, it is calculated according to the size of the uterus at that time.

6. The time to hear heart sounds is generally more than 20 weeks. 7. B-ultrasound examination, which is calculated according to the gestational week that the measured value is consistent with.

The due date is determined based on the first day of a woman's last menstrual period and the length of her gestational week (i.e., the number of weeks pregnant). Typically, the calculation of the due date assumes that each woman has an equal menstrual cycle length and is 28 days, as this is the most common menstrual cycle length. Therefore, the usual calculation of the due date is:

The first day of the last menstrual period plus 280 days is the due date.

However, in reality, very few women have a menstrual cycle that happens to be 28 days. If the menstrual cycle is shorter than 28 days, the expected date of delivery will be earlier than this calculation; If the menstrual cycle is longer than 28 days, the expected date of delivery will be later than this calculation. If the pregnant woman has determined the day of ovulation (i.e. the date on which ovulation begins each month), the expected date of delivery can be calculated by adding 280 days to the day of ovulation, which is more accurate.

In addition, ultrasound can also detect the size and development of the fetus, which can be used by pickpockets to determine the pregnosis of birth. Usually, the doctor will perform the first ultrasound at 6-10 weeks of gestation, and then enter the measured data into a computer program, which will give a more accurate due date.

In summary, the due date is calculated based on the first day of the last menstrual period and the length of the gestational week. If the length of a woman's menstrual cycle is not 28 days, or if the day of ovulation can be determined, a more accurate method can be used to calculate the due date. Ultrasound is also a reliable way to determine your due date.