How to calculate how many months is 25 weeks of pregnancy

In fact, in daily life, many women have to do heavy physical work after pregnancy and need to rest well, especially for some women with malposition of the fetus. So let us understand how to calculate how many months is 25 weeks of pregnancy.

1. Calculated based on the last menstrual period

Add 9 or subtract 3 from the month of the last menstrual period to get the month of the expected delivery date; add 7 to the day of the last menstrual period to get the day of the expected delivery date. For example: Ms. Zhang’s last menstrual period was March 13, 2008, and her expected date of delivery is approximately December 20, 2008. Ms. Li's last menstrual period was on May 28, 2008, so her due date is approximately March 5, 2009. The due date can also be calculated backwards from the first day of her last menstrual period to the 280th day.

2. Calculate based on fetal movement date

If you can't remember the date of your last menstrual period, you can calculate it based on the date of fetal movement. Fetal movements usually begin between 16 and 22 weeks of pregnancy. The calculation method is: for primiparas, it is the day of fetal movement plus 20 weeks; for multiparas, it is the day of fetal movement plus 22 weeks. (General)

3. Calculate based on body temperature curve

The last day of the low temperature segment of the basal body temperature curve is regarded as the ovulation day, and the ovulation day is counted back 264-268 days, or 38 weeks.

4. Calculated based on B-ultrasound examination

When doctors perform B-ultrasound, they can measure the biparietal diameter of the fetal head, the crown-rump length and the femur length to estimate the gestational age and calculate the expected date of delivery (this method is mostly used by doctors for B-ultrasound diagnosis).

5. Calculate from the time of vomiting pregnancy

Morning sickness usually occurs at the 6th week of pregnancy, which is 42 days after the last menstrual period. The expected date of delivery is 280 days after the last menstrual period.

The above article gives you a detailed introduction to the calculation method of how many months is 25 weeks of pregnancy. I believe that everyone has a relatively preliminary understanding, so in daily life, you still need to learn more about this knowledge.