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How do you figure out how many weeks?

We have been TTC for several months and I went on Clomid to ensure the little eggies were dropping. Since I knew exactly when I was ovulating, we had plenty of sex and, here we are a few weeks later with a positive pregnancy test and doctor confirmation. Yay!I'm trying to figure out how many weeks pregnant I should "consider" myself. Calculate the weeks since my LMP? (which would put me at 5 weeks?) Or since conception likely happened, which puts me in the 3 weeks range? Seems that the "norm" is since LMP, but that just feels a bit odd.Thoughts? Thanks for your help!!!!
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Re: How do you figure out how many weeks?

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    LMP. That's how the doctor will calculate it unless they do a dating ultrasound. There's no way to know exactly when conception happened.

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    Do you mean you ovulated 3 weeks ago? Then you would be 5 weeks pregnant. You always add two weeks to the conception date (since pregnancy is dated by LMP and the "average" woman ovulates 2 weeks after the beginning of AF).
    Anneliese Olive 11/5/09
    Hazel Dianna 1/8/11
    Luna Valentine 4/25/13


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    Doctors go by your LMP, so that's what you should go by.  
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    imageJBos82:
    LMP. That's how the doctor will calculate it unless they do a dating ultrasound. There's no way to know exactly when conception happened.

    This. 

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    I was BBT charting and using ovulation strips. I know exactly the day I ovulated, and according to my temperature readings, I have a very good idea of what day implantation happened. When they told me I was 4 weeks along when I got my doctor's confirmation, I was like, "Yep." And when they were about to say when my due date was, I said, "November 5th." The look on the nurse's face was priceless! XD
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    Yeah, the doctors have all been going on the first day of my last period. But at the ultrasound it was figured that I was 1/2 a week less. 
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    Thanks for the feedback ladies!
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