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A member asked:
Crl measurements is 63.9 making it 12 weeks and 5 days. did i concieve 12 weeks and 5 days ago?
A doctor has provided 1 answer
No: By tradition, ultrasound pregnancy dating is based on last menstrual period, rather than conception. So when the ultrasound says 12 wk 5d, that means that you conceived 10wk 5d ago.
Answered 6/17/2014
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