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Gestational Sac Measuring Small

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#1 yaenaSK

  • Global 100+
  • 972 posts
  • Gender:Female
  • Dx:Other
  • My Clinic:Aurora

Posted 16 September 2019 - 02:42 PM

Has anyone had a successful pregnancy after finding out their gestational sac was measuring small?


I had my first U/S today, at 7w3d, and the baby is measuring 6w6d while the sac is only measuring 5w4d. From what I can tell, this means there is a 5mm difference between the sac and the baby. I've read that when the difference is less than 5mm, there is an 80-90% chance of miscarriage.


I haven't had any spotting, and the HB is good (129). My RE is concerned, but seems to be putting it at a 50/50 chance for us. We are doing a repeat scan in just under two weeks to see how things are progressing - hopefully the sac is growing better rather than the alternative (worse growth or no HB).


Has anyone gone through this and had a positive outcome?

Me: 38

DH: 43


June, July, Aug, Sep 2016: IUI. All BFN.

January 2017: IVF #1. 7 eggs retrieved, 6 fertilized. 1 transferred on day 5 - BFP! DD born 10/08/17. heart.gif (2 embryos frozen)

Nov 2018: FET #1. 1 transferred. Chemical pregnancy.

Dect 2018: FET #2. Last embryo transferred. BFN.

April 2019: IVF #2. 16 eggs retrieved, 11 fertilized. 1 transferred on day 5 (5 frozen). Chemical pregnancy again.

Aug 2019: FET #3. 1 transferred - BFP!  Lost HB at 9 week U/S. MMC.  cry.gif

Nov 2019: FET #4. 1 transferred - BFP again! DD due Aug 6/20