Once you discover that your pregnancy spread the good news to the family and friends. The next question is "When you done?" Although most babies do not reach maturity, there are some ways to calculate your due date when it should be.
The date of the last menstruation of the mother is ofton used to calculate the expiration date of the exact date of conception is seldom known. Normally, the deadline is 40 weeks after the first day of last menstrual period.
If known, no other way to calculate the expiration date is your idea of the day. Ovulation and conception usually occur two weeks after the first day of the last menstrual period, so the pregnancy due date is 38 weeks after conception.
Having an ultrasound is the most accurate way to confirm gestational age of the child to calculate the due date. Ultrasound to monitor the child and the measures used to calculate gestational age of the child. An ultrasound can be performed 5-6 weeks after the last cycle mestrual with more accurate results obtained 8-18 weeks of the last mentrual cycle. Because an exact date can be supplied with an ultrasound, and the date calculated from the first day of the last period.
The only exception is for women with irregular menstrual cycles. If so, ultrasound is usually the best way to determine your due date. However, if the baby is too big or small, an ultrasound may not be able to provide enough information for a specific expiration date.