How long is a woman's pregnancy cycle? Many pregnant women and their families are eager to know about this problem. Understanding the pregnancy cycle of women is good for the arrangement of family affairs. The so-called women's pregnancy cycle actually means the period from pregnancy to childbirth, which is usually called the women's pregnancy cycle. In fact, in ancient times, when medical technology and science and technology were not very advanced, people generally believed that women's pregnancy cycle was 10 months, that is, 40 weeks.
Most of the time, family members are eager to know the pregnancy cycle of women, because they are eager to know when the child can be born, which is just their concern and worry. In fact, the pregnancy cycle of normal pregnant women is relatively stable, so families need not worry too much. Then, let's talk about the pregnancy cycle of women.
The pregnancy cycle refers to the period from conception to birth. Pregnancy (or pregnancy, incarnation) refers to the presence of one or more fetuses or embryos in female mammals (including humans). Human pregnancy is the most detailed study in mammals. Since it is difficult for every pregnant woman to accurately determine the time of conception, it is stipulated in medicine that the expected date of birth is calculated from the first day of the last month *, and the whole pregnancy period is 280 days, 10 pregnancy months (28 days for each pregnancy month). Pregnant women give birth within 38~42 weeks of pregnancy, all of which are full term. Since the monthly cycle of each female varies, it is normal that the estimated expected date of delivery differs from the actual expected date by 1-2 weeks. The onset of pregnancy can be determined in several ways. One is to detect the hormones produced by the newly formed placenta. Clinical urine and blood tests can detect pregnancy within 6-8 days after conception.
Cycle calculation
Usually after knowing that you are pregnant, the doctor will help calculate the date of delivery. Generally, there are two methods to calculate the production date:
One is based on the * life date or ovulation period that caused the pregnancy, and the other is based on the date of the last month *.
Because it is difficult for most people to remember the most important thing is that it is difficult to determine the date of pregnancy, so the calculation method generally adopted in clinical practice is based on the first day of the last month *. That is to say, you may realize that you are pregnant when your next month * is too late, but you have been pregnant for at least 2 weeks. The delivery period calculated according to the date of the last month is actually the week of the last month * as the first week of pregnancy.
The pregnancy period is generally about 280 days, that is, 9 months and 1 week.
There is a formula for calculating the baby's birth date: month 9 (or - 3), date 7.
The menstruation period is 3-5 days, even if you have 3 days, the last month * the date of arrival is November 28, 2004. For example, the date of the last month * incoming tide is November 28, 2004. The expected production period is: November March=August, 28th July=35th, that is, September of the next year; 35 - 31=4. The expected production date is September 4, 2005.
If the month * is not accurate, it can be calculated according to the time when fetal movement begins to appear. The first fetal movement of the first pregnant woman is about 18-20 weeks, and the expected date of delivery may be 20-22 weeks later. It can also measure the fetus according to ultrasound or quantum * base height. By using these methods, we can know when the baby will be born.
Through the detailed introduction of the above article, I believe you should have understood the above problems by now. In fact, the pregnancy cycle of normal pregnant women usually lasts from 38 to 42 weeks. As long as a woman's pregnancy cycle is between these weeks, it is normal. So our pregnant women and their families can use this to judge whether their pregnancy cycle is normal.
