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IVFers How did you date your pregnancy?

MBandBudMBandBud member
in Success after IF
I'm a bit lost.  I really thought you just use your ER date as O date.  But the nurse that called said we would be due 5/1.  I have it as 5/30 when I plug into the regular calculators.  I think the wheel she was using was put at the wrong date.  Can you tell me what you used?  Thanks!  
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Re: IVFers How did you date your pregnancy?

  • hannah&benhannah&ben
    I used my ER date as my O date but when I got released from my RE, my OB insisted on using my LMP which made for a few days discrepancy... but whatever :)
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  • rockvillebriderockvillebride
    I used my ER date as my O date. This is different from what my OB calculated, but I always went with "my date." I think it's the most accurate (for me).
    Unexplained. IVF#2 worked! Beta at 10dp6dt = 154, Beta at 13dp6dt = 603 Baby Birthday Ticker Ticker
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  • cmw&tdmcmw&tdm member
    We did ER = day of ovulation.  Go back 14 days and it's the first day of you LMP if you use the online due date calculators.
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  • mel72mel72

    imagehannah&ben:
    I used my ER date as my O date but when I got released from my RE, my OB insisted on using my LMP which made for a few days discrepancy... but whatever :)

    Ha, same here!  I gave up trying to explain it to the nurse after like the 4th visit!  Finally OB listened when we delivered at 33 weeks! 

    Our miracle IVF baby - D 6/09 & J - Surprise! born 9/10!!!
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  • smilelarismilelari member

    imagehannah&ben:
    I used my ER date as my O date but when I got released from my RE, my OB insisted on using my LMP which made for a few days discrepancy... but whatever :)

    Ha!  I told them that I didn't know when my LMP was and that it didn't matter

    I use ER as O date

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  • EastCoastBrideEastCoastBride member
    My RE used LMP, and that's what we went with.   Using that date, I went 6 days past my due date.
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  • MBandBudMBandBud member
    Okay, thanks.  She must have meant June 1 or had her little wheel off.  May 1 would make this a quick pregnancy!  Thanks ladies!!  
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  • JamaicaMon!JamaicaMon!

    I found this calculator handy early on, since it's specifically for IVF ER dates.

    https://www.ivf.ca/duedate.php

    IVF #1 = BFP on 5/2009
    FET #1 = BFP on 5/2011
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  • skoorbniborskoorbnibor member
    ER as O date for sure!
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  • epphdepphd member

    My RE calculated by my "LMP" which was set at 3/19 - 15 days before ER, which was 4/2.

    If I use 4/2, my due date is 12/23. 

    If I use 3/19 as LMP it is 12/24. 

    For what it's worth, every u/s given us a due date of 12/24.  Who knows - he'll be here when he gets here I guess!

    Maybe they use 15 days prior ER since fertilization would ordinarily happen a day after O, whereas in the clinic it happens the same day?  In other words, maybe using the ER date is less accurate?

    Whatevs :)

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