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April 2013 Moms
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When does 2nd trimester start.. 13 or 14 weeks?

LizSavage2013LizSavage2013
in April 2013 Moms

I am confused. So many different websites say different things. some say it starts at 13 and some say 14.. the bump says 14. thoughts? I know if you divide 40 weeks by 3 trimesters you get 13.33 which explains why its right in the middle of both.

 

First time Momma to be! Due April 5th!
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Re: When does 2nd trimester start.. 13 or 14 weeks?

  • Enigma11Enigma11 member
    13 week 3 days. Most people just say that by 12 weeks you are into your second trimester.
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  • RussianMommyRussianMommy member
    I posted the same question.. the general consensus was 13 weeks or 13.3 weeks
    TTC since May 2012; BFP July 31st, 2012; EDD April 13th, 2013 BabyFruit Ticker BabyFetus Ticker Anniversary
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  • WorkinWeezelWorkinWeezel member

    13w3d

    And you want another fun number?

    As far as how many "months" along you are...

    Every 4w4d you change months.  So at 9w1day you are 2 months along, since technically you are pregnant for 10 but no one accepts anything more than 9.  :)

    That one I played around with on my own :)

     

    Met: 1/21/2005
    Married: 6/27/2008
    DS: 3/14/2010 Planned, PG first try
    M/C 6/2012
    DD: 4/22/2013 Planned, UnDx Infertility, PG on our own
    BFP: 10/28/2016 Unplanned, HUGE SURPRISE! 
    M/C 12/12/2016
    BFP: 10/27/2017 Unplanned, HUGE SURPRISE
    EDD: 7/2/2018


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  • Monsieur_et_Madame_HaMonsieur_et_Madame_Ha member
    Yup. 13 weeks 3 days.
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  • lifesadancelifesadance member
    imageWorkinWeezel:

    As far as how many "months" along you are...

    Every 4w4d you change months.  So at 9w1day you are 2 months along, since technically you are pregnant for 10 but no one accepts anything more than 9.  :)

    I have never understood the math on the 10 months thing.  My LMP was in July, so starting there: July to August = 1 month + August-September= 2 months + to October=3 months + to November = 4 months + to December = 5 months + to January = 6 months + to February = 7 months + to March = 8 months + to EDD in April = 9 months.

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  • danuli8danuli8 member

    Thanks to the OP. I've always been confused by this myself. One of my baby books says you're in the second trimester at 12w and I thought that didn't add up.

    I think part of the confusion stems from the oft-cited statistic that once you hit 12w, your risk of m/c goes down to about 1%. (It is 12w, isn't it?)

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  • rayofsunshine99rayofsunshine99 member
    imagelifesadance:
    imageWorkinWeezel:

    As far as how many "months" along you are...

    Every 4w4d you change months.  So at 9w1day you are 2 months along, since technically you are pregnant for 10 but no one accepts anything more than 9.  :)

    I have never understood the math on the 10 months thing.  My LMP was in July, so starting there: July to August = 1 month + August-September= 2 months + to October=3 months + to November = 4 months + to December = 5 months + to January = 6 months + to February = 7 months + to March = 8 months + to EDD in April = 9 months.

     

    OB's count pregnancy starting the day of your last LMP which technically adds 2 weeks to your pregnancy which is a total of 40 weeks.  If you measure a month in 4 week increments, it turns out to be 10.  (40 / 4 =10)    However, 4 weeks = 28 days and a calendar, most months are a few days more than that.   So it's 9 calendar months but 10 months if you measure in 4 week increments.

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    Tyler (10/29/08)
    and Lily (4/21/13)

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  • lpfolandlpfoland member
    Thank you for posting this.  I was wondering myself.  Praying that that so called 'pregnancy glow' will kick in at 13w3d. 
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