Most pregnant women start counting the date of delivery with their fingers from the moment they become pregnant. There are very strict calculation methods for calculating the production period, and it is necessary to find the correct calculation method in order to calculate accurately. Any error in the calculation process can result in an inaccurate due date. How to calculate the due date for pregnant women?
The estimated due date can start from the occurrence of morning sickness. Generally, morning sickness occurs at 6 weeks of pregnancy, and the date of onset of morning sickness is then pushed back 280 days, which is called the due date. Doctors usually calculate the due date based on the gestational age, with every seven days forming one week. The entire pregnancy lasts for 40 weeks, starting from the last menstrual period and extending back 40 weeks can also accurately calculate the due date.
Some women cannot remember the exact time of their menstrual cycle and do not know when their last menstrual period came. In this case, it is necessary to first undergo ultrasound examination to calculate the gestational age based on the ultrasound examination results, so as to estimate the due date. The gestational age estimated through ultrasound examination is relatively accurate, so the expected delivery date will also be more precise.
Pregnant women need to understand that no matter which method is used to calculate the expected delivery date, it may not necessarily be the day of the mother's birth, and there will inevitably be some errors. From a medical perspective, fetuses born two weeks before and after the gestational period are considered full-term infants and are considered normal deliveries.
