How to calculate the number of days pregnant

The number of days of pregnancy is usually calculated from the first day of the last menstrual period. This is because ovulation and conception typically occur about two weeks before the next menstrual period in most women. This method of calculation is known as gestational age calculation and is the standard medical approach for estimating the due date. For example, if the first day of the last menstrual period was April 1, ovulation and conception likely occurred around April 15. However, the count begins from April 1, so by May 1, it would already be considered the fourth week of pregnancy, approximately 28 days. Please note that the actual date of conception may vary. An ultrasound examination during early pregnancy can more accurately determine the gestational age by measuring the size of the fetus. If there is uncertainty or a more precise calculation is needed, consult a healthcare provider.