Changes In The First Month Of Pregnancy

 

For dating purposes, the first month of your pregnancy is actually calculated by the first day of your last menstrual period. It counts the weeks prior to ovulation, even though you were not pregnant at that time. Doing this helps the doctor estimate your due date. You can calculate your date at home, prior to your first visit. Count nine months from the date of your last period. Then add seven days. This will be your estimated due date.