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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Want To Find Out The Right Way Of Counting The Exact Day Of My Pregnancy?

Hi there just a quick question regarding conception , I had my last period on the 14th of December 2012, I went for a dating Scan yesterday which dated me 13 weeks exactly, which puts me a week ahead? If I count back 13 weeks ago is that when I conceived or do i count back 11 weeks to find out conception? Does this just mean I could of conceived a week early?
Thu, 14 Mar 2013
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OBGYN 's  Response
Hi,
Thanks for writing in.
During the first trimester a discrepancy between dates & scan of up to one week is considered acceptable. Time of conception is usually two weeks after the first day of your last period if you have regular 28 days cycle.
I suggest you should not stress out much by these medical details & concentrate more on your diet & wellness.
Wish you best of luck
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Want To Find Out The Right Way Of Counting The Exact Day Of My Pregnancy?

Hi, Thanks for writing in. During the first trimester a discrepancy between dates & scan of up to one week is considered acceptable. Time of conception is usually two weeks after the first day of your last period if you have regular 28 days cycle. I suggest you should not stress out much by these medical details & concentrate more on your diet & wellness. Wish you best of luck