How can women check their due date?

The ancients often said that it takes ten months for a woman to give birth to a child, but many women don’t know exactly when the baby will be born. In medicine, the date of delivery is often determined by calculating the expected date of delivery. However, many female friends do not know how to check the due date. It is very important for pregnant women to calculate the due date in advance. Let’s take a look at how to check the due date.

1. Calculated based on the last menstrual period

On the premise of regular menstruation (28 to 30 days between two menstrual periods), if the pregnant woman can remember the time of her last menstrual period, she can directly apply the formula to calculate the expected date of delivery. This formula is derived from the time of pregnancy and the time of the last menstrual period. The total gestation period is 280 days. Regardless of the length of the month, it is calculated as 30 days per month, and the gestation period is equal to 9 months plus 10 days. Taking into account the factors of long and short months, and adding the special month of February, we can compromise and calculate three long months, so the gestation period is equal to 9 months plus 7 days.

The formula is: expected date of delivery = the month of the last menstrual period (if it is from January to March, it is calculated as 13th to 15th month) minus 3, and the number of days plus 7.

Some pregnant women have a short menstrual cycle, which may come every 25 days or so. In this case, use the above formula to calculate and subtract 2 days after the calculation. Some pregnant women have a longer menstrual cycle, which may only come every 35 days or so. In this case, use the above formula to calculate, and then add 7 days.

Some women have irregular menstruation, or have forgotten the time of their last menstrual period, or have become pregnant again after a miscarriage without a menstrual period, so they have to use the second method. This method requires pregnant women to remember exactly on which day the early pregnancy reaction occurred. After knowing the specific time, the formula can be applied to calculate. This formula is derived from the reality that "early pregnancy reactions often occur in the 6th week of pregnancy."

Regarding the question of how to check the due date, I believe that after reading the above content, many friends know how to check the due date. The due date cannot completely determine the date of delivery, it can only be a rough estimate. Of course, some female friends may experience premature or late births. Generally speaking, it is recommended that pregnant women stay in the hospital or have family members accompany them during the expected delivery period to prepare for delivery.