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    kdc001's Avatar
    kdc001 Posts: 3, Reputation: 1
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    #1

    Jun 21, 2013, 09:13 AM
    Conception date/paternity?
    I got an ultrasound and I was about 16 weeks and 4 days pregnant which made my LMP of being December 5th and my conception date December 19th.They did tell me that it could only be off by 3 days. I was with guy 1 on the 19th and the 23rd of dec. I was with guy 2 on January 9th/10th. How possible is it for guy to be the father?
    ScottGem's Avatar
    ScottGem Posts: 64,966, Reputation: 6056
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    #2

    Jun 21, 2013, 09:18 AM
    Remotely, but not impossible. Calculating conception is an inexact science. I'm surprised they felt they could pinpoint it to within 3 days. Normally they will give a date +/- 2 weeks. Even then Guy 2 seems remote. But I don't think anyone can tell you positively that you can rule him out. Only a DNA test after birth can do that.
    kdc001's Avatar
    kdc001 Posts: 3, Reputation: 1
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    #3

    Jun 21, 2013, 09:20 AM
    Quote Originally Posted by ScottGem View Post
    Remotely, but not impossible. Calculating conception is an inexact science. I'm surprised they felt they could pinpoint it to within 3 days. Normally they will give a date +/- 2 weeks. Even then Guy 2 seems remote. But I don't think anyone can tell you positively that you can rule him out. Only a DNA test after birth can do that.


    It was more than 2 weeks though.
    ScottGem's Avatar
    ScottGem Posts: 64,966, Reputation: 6056
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    #4

    Jun 21, 2013, 09:48 AM
    That's why I'm saying its unlikely, but no one can state with 100% certainty that it isn't guy 2.
    kdc001's Avatar
    kdc001 Posts: 3, Reputation: 1
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    #5

    Jun 26, 2013, 09:03 PM
    How likely is it for conception dates to be off by 3 weeks?
    My period has been really irregular because I've been on and off the pill. My conception date landed on dec 19th which was the exact date I was with someone but I also was with another guy jan 10th.

    My question is how likely could it be guy 2? I am aware that it is unlikely but not 100%.

    And from experience of girls is your conception date usually right on or in the same week?
    Fr_Chuck's Avatar
    Fr_Chuck Posts: 81,301, Reputation: 7692
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    #6

    Jun 27, 2013, 03:34 AM
    Conception dates is estimates, ( educated guesses) And the answer is, depends on what data and how the date was estimated, did the doctor give you that date ?

    But yes it is possible,
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