A 29-year-old female asked:
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if you don't know when your last monthly period was but are pregnant, how can doctors determine your due date, or is it just a guess?

1 doctor answer
Dr. Uzma Chaudhry
17 years experience Internal Medicine
Ultrasound: Ultrasound can determine approximate due date judging by the size of the fetus.
Answered on Sep 12, 2013

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Reverse calculator: Probably sometime around 9 march 2013. Probably sometime around 9 march 2013 for ovulation. Around 17 march 2013 for implantation.
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Due 8/28/15: LMP 1121/14 therefore EDD 8/28/15
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