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A member asked:

What do you suggest if my doctor said b/c my baby was small at my 21 week ultrasound, my due date changed from may 31 to june 16. are they right?

A doctor has provided 1 answer

Ultrasound dating: First trimester ultrasound is accurate within 5-7 days. Lmp dating also assumes a 28 day cycle. Due date is based on LMP unless us off by more than 1 week 1st trimester or 2 weeks in 2nd. And it's only an estimate; the baby will decide when to come regardless of what you or your doctor think :).

Dr Arnoult and another doctor agreed

Answered 2/20/2015

3.9k views

Thank

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