When does menopause start?

The time of menopause is calculated based on the time of the last menstrual period of a woman. It is because of the physiological cycle of a woman, and it is calculated from the first day of menstruation. At this time, due to the shedding of the uterine wall, the menstrual period comes, and the eggs in the ovaries begin to grow. Let's take a look at when menopause starts.

When does menopause start?

For women whose menstrual periods and ovulation periods are normal, we usually start calculating from the first day of the expected delivery date. If we calculate based on the pregnancy life, the pregnancy week may be about two weeks less than our calculation.

Although the estimated time of pregnancy is indeed the day when you actually start to get pregnant, most people will not start calculating the gestational age from that day, because you have no way of knowing exactly when you ovulated and became pregnant. Therefore, most doctors will choose a simpler method to calculate your gestational age - starting from the first day of your last menstrual period. I believe it is not easy for you to make mistakes in this life.

Because every pregnant woman cannot accurately tell the time of pregnancy, medicine requires that the expected date of delivery be calculated from the first day of the pregnancy. The entire pregnancy period is 280 days, 10 gestational months (each gestational month is 28 days). Pregnant women give birth between 38 and 42 weeks of pregnancy, all of which are full-term.

Because each woman's menstrual cycle is of different length, it is normal for the estimated due date to differ from the actual due date by 1-2 weeks. The key calculation methods are as follows:

1. Calculate based on the expected date of delivery:

Add 9 or subtract 3 from the month of the expected date of delivery to get the month of delivery; add 7 to the day of delivery to get the day of delivery. For example: Ms. Chen's due date is March 13, 2008, and her due date is approximately December 20, 2008. Ms. Chen's due date is May 28, 2008, and her due date is approximately March 5, 2009. You can also calculate backwards from the first day of the due date to the 280th day, which is the due date.

2. Calculate based on the baby's fetal movement date:

If you can't remember your due date, you can calculate it based on the baby's fetal movement time. Generally, fetal movement begins between 18 and 20 weeks of pregnancy. The calculation method is: for first-time mothers, it is the day the baby moves plus 20 weeks; for first-time mothers, it is the day the baby moves plus 22 weeks.

3. Calculation based on the basic body temperature curve:

The last day of the ultra-low temperature segment of the basal body temperature curve is taken as the ovulation period, and 264-268 days are counted backward from the ovulation period, or 38 weeks are added.