A 17-year-old female asked:
do you count the first day of your last period as the starting day of your pregnancy ?
2 doctor answers
Dr. Jane Van Dis answered
17 years experience Obstetrics and Gynecology
No: The way we date pregnancies is a little confusing. The first day of a pregnancy is dated based on your last menstrual period because women typically don't know when they ovulate (and conceive) but the do know when their last period was. So really, embryos are 2 weeks younger than the assigned age we give them. Thus, when a woman misses her period, we say she's 4 weeks pregnant, when really...
Answered on Aug 7, 2013
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
People also searched for:
Connect by text or video with a U.S. board-certified doctor now — wait time is less than 1 minute!