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Help me understand my EDD

jeffraejeffrae member
in Parenting after a Loss

LMP = 7/24.  EDD = 4/30/11

O Date = 8/9 (based on CBEFM "peak" and me feeling it) & the deed date.  EDD = 5/3/11

u/s measurements (2 mm & HB at 100bpm) this am now has EDD = 5/6/11

I had BFN on 8/19 and BFP on 8/20 (digital).  That would mean based off of my ultrasound date that my BFP was 8dpo??  Is that even possible?  Last time I charted like crazy and had BFN at 10dpo and BFP at 11dpo.  The ultrasound then always matched with my O date (LMP put me a week later).

Is it possible it just took 4 days to implant which is why the date is later?  Is the u/s the most accurate? 


also posted on pgal

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Re: Help me understand my EDD

  • PurpleK26PurpleK26 member
    I'm not positive on this, but I'm pretty sure that the u/s is the most accurate.
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  • lil_rhodylil_rhody member

    u/s are very accurate at this gestation, but they can still be off a few days in either direction. It's close enough that I wouldn't worry about it.

    Congrats on the great u/s today!

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  • lkstorlkstor
    First tri u/s is +/- 7 days.
    BFP#1 May 17, 2008
    Surgery for ectopic pregnancy June 3, 2008
    ******
    BFP #2 September 25, 2008
    Baby boy born June 4, 2009 at 40 weeks
    8 pounds 13 ounces and 23 inches
    Baby Birthday Ticker Ticker
    ******
    BFP #3 February 6, 2011
    First U/S February 25, 2011 = TWINS!!!
    Boy/girl twins born October 4, 2011
    Baby Birthday Ticker Ticker
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  • MskharisMskharis member
    My ultrasound from day one had my EDD at Jan 12th. I didnt know my LMP.
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  • Lucky428Lucky428
    My guess is that the u/s is the best bet and most accurate.  Congrats on seeing the hb!!
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  • zschick4everzschick4ever
    Like other have said the earlier u/s are more accurate.
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  • k.lockwoodk.lockwood

    Mine was off by 4 days also.  I was all confused...

    my LMP would make my EDD 4/12.  I know when it happened which would match or be 4/13.

    U/S says EDD = 4/18

     

    Crazy huh?  Congrats though!  Looks like a bunch of us are PG together again!  :) 

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