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A member asked:

How often are 9 week us dates exact when determining conception?

A doctor has provided 1 answer
Dr. Gerard Honore answered

Specializes in Fertility Medicine

Pretty exact: If and only if down correctly - they are within +/-2-3 days.

Dr Harper agreed

Answered 4/9/2014

4.2k views

Thank

Related Questions

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How accurate are the doctors measurements of the baby to determine baby weeks, due date, conception, ovulation etc...

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How can conception date determined by early trans u/s done at 6 weeks 3days be accurate if you can still get pregnant w/in the 2 weeks of gestational age?

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If u give birth 23rd march but u have a 28-33 cycle would u count 38 weeks back to determine conception date ?

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A member asked:

I had sex on the 31st August & 12-14th September. My due date has been given as 4th July and 12 weeks pregnant. Which date is a more likely date of conception? My periods are very irregular to determine from those dates?

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A member asked:

Hi, i'm pregnant. Went for a scan and it determined i'm 4-5 weeks but i'm unsure of conception dates, i know i had unprotected sex on 26/3/14 and 7/4/14?

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