Measuring behind at 5 weeks 1 day

Re: Measuring behind at 5 weeks 1 day

• pshaortao member

  September 2016 edited September 2016

  While the calculation factored in your cycle length, it did not know the exact day you ovulated, which could be off by a few days. I wouldn't stress and wait until a follow up ultrasound and see if the baby is staying on track with growth. The fact there is a sac and yolk sounds very promising!

  
  

  
  

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• slam1110 member

  September 2016

  I agree with @pshaortao !  You could have just ovulated later than "normal". 
  

  Me: 33 / DH: 35

  Married: Nov 2006

  DD: Sept 2010

  DS: June 2013

  BFP #3 - EDD 5.13.16
  

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• vrj0522 member

  September 2016

  I agree with pp. Unless you were temping daily, you cannot know what day you ovulated. The luteal phase can be different from woman to woman (usually between 10-15 days in length) so you could have ovulated later than your calculator would tell you because the calculator only gives you a standard number and not one that is tailored to your own body and how your body works. 
  
  
  
  

  

  Me: 38 DH: 36
  Married 8/27/2011
  BFP #1 9/28/2011 DS born 5/22/2012
  BFP #2 4/24/2013 m/c 4/25/2013 at 4w
  BFP #3 1/31/2014 DD born 10/14/2014
  BFP #4 1/20/2016 m/c 2/12/2014 at 7w2d
  BFP #5 8/19/2016 DS2 born 4/29/2017
  BFP #6 3/7/2018 EDD 11/18/2018
  

  
  

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• julieannburkhart member

  September 2016

  This has happened with both my pregnancies because my cycle is usually 36 days and the OB calculates it at 28. I always measure a week behind but my son is healthy as can be and OB said this new baby looks great and healthy too.

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• champhe member

  September 2016

  Thanks everyone! 

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• kat81 member

  September 2016

  Also, I found that these early dating ultrasounds can be off even if you DO know when you ovulated. I knew precisely with DS (temping, opk) and had a due date of 12/22. The ultrasound that I got just shy of 6 weeks stated my due date was 12/26. He came 12/18 (not that his arrival date is relevant, though.)
  
  Because of unexplained bleeding & cramping I had, I got an ultrasound yesterday. I was supposed to be 6w6d given my LMP (but this time I did not know about my ovulation precisely), and they calculated it as 6w0d or maybe 5w6d. I was concerned and thought this was evidence I DID miscarry, but the tech was like, "there's the heartbeat." So seems like everything is fine. And I'm going to keep using my original EDD because I'm not going through an extra week of first tri, haha.
  

  
  
  
  
  

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