Angela Chiodo, CNM Certified Nurse-Midwife: So establishing your due date is one of the most important things we do in a pregnancy.
Kathy Wood, MD OB/GYN: To figure out your due date, we usually ask about your periods, your cycle lengths, when your last period was. And we usually compare that to your first ultrasound. Based on those pieces of information, your provider should be able to give you a due date.
Shauna Hicks, MD OB/GYN: The last menstrual period helps us figure out how far along in the pregnancy you are. And that's very important for things like genetic screening, and time of delivery later.
Angela Chiodo, CNM Certified Nurse-Midwife: So the earlier that we can find out what your cycle was like, and date your pregnancy based on that, the better.
Julia Barnes, MD OB/GYN: If you're unsure of the last literal period or if you were taking birth control around the time you were potentially menstruating, we then frequently do a first trimester ultrasound or an ultrasound early in the pregnancy to get really good data.
Fonda Mitchell, MD OB/GYN: So those two tests, done in combination, give us the most accurate form of how far along a woman is.
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