If you have regular periods, the pregnancy period is calculated from the first day of the last menstrual period, and the due date is also calculated from the last menstrual period.
If your period is not regular or you have forgotten the time of your last menstrual period, you can have an ultrasound to determine the gestational week of the fetus, and thus calculate the duration of the pregnancy and the expected date of delivery.
The pregnancy period is calculated from the first day of the last menstrual period, the whole pregnancy period is 280 days, a total of 40 weeks, that is, 10 months, the pregnancy period is calculated as 7 days for a week, 4 weeks is a month.
After pregnancy, you should go to the hospital for regular obstetric checkups, pay attention to maintaining a good mindset, adjusting your diet, ensuring sufficient sleep, not staying up late, and not doing strenuous exercise.
In addition, if you feel unwell during pregnancy, please seek medical advice as soon as possible to avoid delay.