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second trimester 13 or 14 weeks?

alisonmoosealisonmoose member
in 1st Trimester
Hi all, just a quickie, I'm turning 13 weeks pregnant tomorrow, does anyone know if its still the 1st trimester or the start of the 2nd trimester? I've read different things, some say its 13 weeks, others 14. Anyone actually know? Thank you
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Re: second trimester 13 or 14 weeks?

  • mamaloafmamaloaf member
    edited January 2014
    You'll find different answers. I went by 13w3d. 
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  • missmiss307missmiss307 member
    It's really not super important. If you want to be technically correct, then it would be 13w3d because that's 1/3 of 40 weeks. I honestly think of 13 weeks as start of second tri and 27 weeks start of third.
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  • beckynsean11beckynsean11 member
    13w3d is my answer, but I have a bit of a penchant for precision when it comes to numbers. ;)

       Me: IR-PCOS, elevated DHEAs, low progesterone, weak ovulation  DH: low volume, low T
    SHG 5/10/13: both tubes blocked; HSG 6/28 = Left tube cleared! Right blocked.
    BFP#1 7/20/13 EDD 3/30/14, m/c 8/19/13, D&E 8/21/13, Chromosomal results = normal, female
    Lap & hysteroscopy scheduled for 10/31, right tube cleared, no endo found! ...Happy Halloween!
    Cycle 14: Clomid (50)+ IUI = BFP! EDD 9/16/14~ Rowan Elizabeth born sleeping at 17w4d on 4/12/14 due to IC.
    ~There is no foot too small that it cannot leave an imprint on this world~
    New RE June 2014. RPL b/w - negative. SIS looking for uterine/cervical abnormalities & Asherman's 6/10/14 - ALL CLEAR!  
    Cycle 16: Natural IUI = CP, Cycle 17: Femara (2.5) + IUI = BFN, Cycle 18 Femara (5) + IUI = BFFN, Cycle 19: Break
    Cycle 20: Clomid (50)+ IUI = BFP EDD 6/20, transvaginal cerclage 12/19, Carson Quinn born sleeping at 16w3d on 1/6/15 due to IC
    Phone consult with Dr. Haney (Univ of Chicago) for transabdominal cercalge scheduled for 2/9/15.
    "We are the music makers, and we are the dreamers of dreams."
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  • mamaloafmamaloaf member
    I know people say it doesn't matter, but when you're in your 1st tri and you know that most losses happen during 1st tri, it sure matters. At least it did to me. It was something to look forward to. 
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  • alisonmoosealisonmoose member
    Thank you. It is important to me, being my first pregnancy I want to know everything, and I'm looking forward to the next milestone :-)
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  • alyssa719alyssa719 member
    I think someone calculated this out in the July board to be 13w3d8h or sooo... ;)  But I don't remember if you have to know the exact time of conception for that to work or not. 
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  • WashingtonQueenWashingtonQueen member
    mana84 said:

    I know people say it doesn't matter, but when you're in your 1st tri and you know that most losses happen during 1st tri, it sure matters. At least it did to me. It was something to look forward to. 

    A few days doesn't make a difference. Is Sally more likely to have a loss than Mary because Sally considers 2nd tri to start at 14 weeks and Mary considers it at 13? No.
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