Re: Dating ultrasound & HCG levels

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Plus or Minus 5 days(The accuracy of US at 8-10 weeks)

The technition said that would mean implantation >occured on the 5th or 6th of April.

Again plus or minus 5 days

On the 8th of April my HCG level >was a 2 and then on the 11th of April my HCG was a 44. I don't
>understand how I can be two months along according to the ultra sound in
>the middle of may (making me pregnant in the middle of March right?)when
>my HCG indicated on the 8th that I was only one to two weeks and with an
>implantation date of the 5th or 6th. I guess I don't understand the
>whole cycle thing. Thank-you for your time and take care.

The way we count pregnancy, you are already 2 weeks along when you ovulate and then implantation occurs 4-7 days after that.

So that would mean that implantation occurred 5 weeks and 3 days (Plus or minus 5 days) before May 15th(Somewhere between the 2nd and 12th of April.)

--
R.Daniel Braun, MD  FACOG   FOG
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