How many days does it actually take from pregnancy to birth?

As the saying goes, "Ten months of pregnancy and one day of delivery", the process of pregnancy is both happy and difficult, full of surprises and pain, and only the pregnant woman herself can deeply experience the feeling. So, how many days does a pregnancy last? There are many pregnant women who may not have figured it out yet. Today, the editor will explain to everyone in detail: How many days does it take from pregnancy to delivery? For everyone's reference.

How many days does it take from pregnancy to delivery?

The standard number of days from pregnancy to delivery should be calculated from the first day of the last menstrual period. The total number of days of pregnancy is 280 days, or 40 weeks. This is the origin of "ten months of pregnancy", which refers to 10 months of pregnancy, which is calculated based on 1 week and 7 days, 1 month and 4 weeks, which is 28 days. But in fact, the normal gestational time is about 265 days, which is only 9 gestational months plus 10 days. Therefore, pregnant women give birth within 38-42 weeks of pregnancy and are considered full-term.

In addition, medicine generally divides the entire pregnancy process into three stages: the period before the 13th week is called early pregnancy, the period from the 14th to the 17th week is called mid-pregnancy, and the 28th week and thereafter is called late pregnancy.

How to calculate the due date

The time of birth of the newborn calculated after pregnancy is called the "delivery period", which is commonly referred to as the ten months of pregnancy. However, the month here is not the month on the calendar. The October here is 28 days per month, so October is 280 days, and it is calculated from the first day of the last menstrual period.

Calculation method for expected date of delivery: add "9" or subtract "3" from the month of the last menstrual period and add "7" to the time. If the lunar calendar is used, the month is calculated in the same way, but the time is changed to add "15".

For example, the last menstrual period was on February 1, 1985: month 2 9, time 1 7, then the date of delivery is: November 8 (85);

The last menstrual period was on April 15, 1985: month 4-3, time 15 7, so the date of delivery was January 22 (86).

In addition, the due date does not mean that this event will definitely happen, it is just an approximate time. Being born within 2 weeks before or after the due date is within the normal range.

The article says "From pregnancy to delivery, we must believe that everyone has a relatively complete understanding of this matter. In short, under normal circumstances, from the beginning of pregnancy to the birth of a baby, it basically takes about 38-40 weeks. In addition, the due date is only a standard value for estimating the birth time of a newborn.