Help me calculate the last menstrual period on March 22nd. When is my due date?

According to your last period, your due date is 20 19 12/29.

(1) Formula for calculating the date of pregnancy and delivery

This is the most commonly used calculation method, as long as you remember the date of the last menstruation.

The specific calculation method is: month = month of last menstruation -3 or +9 (if you can't subtract 3, you can add 9) date = date of last menstruation +7 (if you get more than 30, the number after subtracting 30 is the expected date of delivery, and the month is delayed 1 month). For example, if the last period was 2065438+July 26th, 2004, then month =

(2) Medical methods for estimating the expected date of delivery

If you can't remember your last period and don't know the possible ovulation or pregnancy time, the doctor will use some medical methods to estimate the expected date of delivery.

If the doctor measures the biparietal diameter, head and hip length and femur length when doing B-ultrasound, the gestational age can be estimated and the expected date of delivery can be calculated.

Usually, only 5% of babies are born in the expected date of delivery, and in most cases, they will be born a few days before and after the expected date of delivery, so it is normal for medicine to give birth two weeks before and after the expected date of delivery.