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A member asked:
The ultrasound say i conceived on 9/16/12, but i wasn't with anyone at that time. however i was with someone on 9/23/12. how accurate is a ultrasound?
A doctor has provided 1 answer
Sooner is better: We measure embryos in mm's and that correlates fairly accurately with age in days/weeks. You can imagine that after 3 months, measuring a baby in mm's may not make much sense anymore. In the 2nd and 3rd trimesters, we're measuring in cm's -- then it's up to genetics, nutrition, etc. Although I am fp, i personally disagree with changing a due date by 1 week. Go with period and conception/sex dates!
Answered 12/25/2012
5.4k views
Related Questions
A member asked:
Good morning Dr I had sex on the 26th of March but the ultrasound sate that I conceived on the 15th of March how accurate is that?
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A member asked:
If my 8 1/2 wk ultrasound says I conceived 10/27 what dates would I have had to have sex on?
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If i had sex between november 2nd-8th 2013 &conceived during that time when would my due date be? February 20th had an ultrasound that said 17wks/5d
A doctor has provided 1 answer
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