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Sac measuring 1 week behind

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Sac measuring 1 week behind

Postby Jilltine » Thu Dec 25, 2008 1:49 pm

I had my first u/s at 7 weeks. The baby measured 6 wks 6 days and had a good heartbeat. The nurse told me the sac was measuring 1 week behind. She told me not to be worried, they usually catch up. If it was 2 weeks behind they would be concerned. Of course I am worried. Has anyone heard of this or have any experience with this ?
Jill (30)/ Andy (35)
IUI Clomid BFN
IUI Follistim BFN
IVF #1 Cancelled (Embies arrested)
IVF #2 @ chemical/miscarriage
IVF #3 November/ BFP
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Joined: Sat Oct 04, 2008 6:56 pm
Location: York, Pennsylvania

Postby SilverAngel679 » Thu Dec 25, 2008 6:41 pm

About 1 week in either direction with ultra sound is the rule of thumb. A sac measuring 1 week behind shouldn't be too much of a concern.
Just wait and see what happens at your next scan to figure out if you have a real reason for concern or not. good luck with it all and I'm sure your bean wil be just fine.
Me: Liz, 29 (Healthy)DH: Tom, 28 (Male factor)
IVF#2: BFP (m/c @ 14weeks)
IVF#3: BFP Twin Boys, born 3/23/09
Posts: 325
Joined: Wed Aug 13, 2008 8:33 pm

Postby kb2131 » Thu Dec 25, 2008 10:31 pm

hi there,
a word of encouragement. Up until our 9 week ultrasound, our crown rump lengths were always on target but our 1 sac (we are having twins) was 1 week behind. at the 9 week they appeared to be the same size and caught up! our RE and OB advised us that sometimes when you are looking at a 3D object in a 2D setting it can be the way the sac is sitting or it can just simply be the sac is taking a bit longer to catch up. the CRL is more important from what I have learned. good luck to you and we will be thinking of you!
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Joined: Mon Nov 17, 2008 9:44 pm
Location: chicago, il

Postby kholtan » Fri Dec 26, 2008 2:12 am

One of my twins was 5-7 days behind for the first couple months and then the were equal from there out. I wouldn't worry. . . Ok, easier said than done! :?

Good luck!
Me 35, DH 35
Ectopic Oct. 2005
IVF transfer 1-21-07. . .TWINS!!!!


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