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Due date calculation is VERY easy!

HeidiseanHeidisean member
in TTC After a Loss
Just subtract 3 months and add 7 days to the 1st day of your last period. I do it every month AF shows up to see my new due date;)
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Re: Due date calculation is VERY easy!

  • PeetiePiePeetiePie
    My head hurts reading that Heidi.  I cheat and use the online calculators. 
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  • HeidiseanHeidisean member

    imagePeetiePie:
    My head hurts reading that Heidi.  I cheat and use the online calculators. 

    Really? My last period was Feb 4th so subtract 3 months would be November and add 7 days for 11th......my due date WILL be November 11, 2010!!!

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  • ShellShockedMamaShellShockedMama member

    imageHeidisean:
    Just subtract 3 months and add 7 days to the 1st day of your last period. I do it every month AF shows up to see my new due date;)

    that is entirely too much math for a girl who still has to count on her fingers. 

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  • lindsay.loulindsay.lou member
    I sort of do that. I go ahead 9 months from O day and then subtract 7 days.
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  • islelilyislelily member
    cool!!
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  • skroopsskroops
    cool, thanks for sharing! :)
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  • lax15bsulax15bsu member
    I go to www.countdowntopregnancy.com. I put in LMP or O-date, and it tells me due date, out of first tri date, first hb, first movement, second tri...all of that. And what seasons I'll need maternity clothing. I'm too lazy to count backward or forward or anything, lol!
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  • JustDoIt62009JustDoIt62009 member

    imagelax15bsu:
    I go to www.countdowntopregnancy.com. I put in LMP or O-date, and it tells me due date, out of first tri date, first hb, first movement, second tri...all of that. And what seasons I'll need maternity clothing. I'm too lazy to count backward or forward or anything, lol!

    Ohhh I like this! I just went there and used it :) 

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  • 3ltlones3ltlones member
    yeah I use babycenter.com you can go by lmp or by O date.
    DD(9)DD(5.5)DS(3)DS(born 2/1/11) July 2006, lost a baby at 8 weeks, natural miscarriage , May 2009 lost Zoe Eliana at 17 weeks no reason known, possible under developed organs. Lost two more babies in September 2009 at 7 wks 4 days. Had myomectomy surgery to remove a large fibroid in November 2009.
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  • sherdsherd member
    Well then, I would have a due date of Halloween!
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  • HeidiseanHeidisean member
    imagesherd:
    Well then, I would have a due date of Halloween!
    That is my sister's birthday!
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  • grr_aarghgrr_aargh member
    Unless you have an 18-29 day follicular phase, that is. . . 
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  • JustDoIt62009JustDoIt62009 member

    imagesherd:
    Well then, I would have a due date of Halloween!

     FF has my predicted due date as Halloween if I get KTFU this time around too! Definitely one of my fave holidays 

    Peanut BFP 9.18.2009 EDD 5.23.2010 m/c 10.16.2010
    DD#1 BFP 4.28.2010 EDD 1.10.2011 born 12.27.2010
    DS BFP 8.29.2012 EDD 5.11.2013 born sleeping @ 17 weeks 12.1.2012
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  • Joyous1106Joyous1106 member

    imagegrr_aargh:
    Unless you have an 18-29 day follicular phase, that is. . . 

    Ditto this.  This formula is what many OBGYNs use to calculate due date (and nurses, too, it's what i was taught in school), but it doesn't allow for cycles that are longer than 28 days, or follicular phases that are longer (or shorter) than 14 days.  Which is why it's an *estimated* due date. ;)  I much prefer going by O date, it is far more accurate (at least in my situation and others like it).

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