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A 19-year-old female asked:

My periods are irregular. i'm 10 weeks and 2 days now. my ultra sounds due date are 04/26/15 but my lmp is tellin me 04/20/15. which one to believe?

1 doctor answer • 1 doctor weighed in
Dr. Cynthia Archer
Dr. Cynthia Archeranswered
Internal Medicine 21 years experience
Ultrasound.: Is by far more accurate than dates, especially if you have irregular menses. Women ovulate on different days, especially when cycles are not clockwork regular. There will be another US done later on, but for now it is safe to assume that your fetus is closer to 5 days younger than your date suggests. Remember, lots of women give birth earlier or later than their expected date. Focus on healthy!
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Last updated Oct 31, 2014

Found in:

Female health›Irregular periods›First trimester pregnancy

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