Pregnancy: Age 35+ Community
25 weeks baby measurements looks 1 week behind
About This Community:

Join other 35+ year old expecting mothers for support through pregnancy and childbirth. Ask a question, join a conversation, share experiences.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
Blank Blank

25 weeks baby measurements looks 1 week behind

Had an ultrasound yesterday. My babys measurements looked 1 week behind. AC measurement was at 4 percentile. I am 25 weeks. anyone experienced this?
Related Discussions
5 Comments Post a Comment
Blank
1039620 tn?1272597604
I would try not to worry too much about the one week difference. The farther along you are the more ultrasounds can be off, sometimes up to two weeks, unlike earlier ones that are only off by a few days. As for the AC (abdominal circumference) percentage, it can be smaller if you and your husband are smaller people, which will mean that your baby may also be smaller. It's a little early now to determine, but if you look at it like this, a normal 7lb baby is the 50 percentile, and 6lb baby is 25 percentile and a 8lb baby is 75 percentile. You need to remember since you are only at 25 weeks, a LOT can change before your due date. The baby goes through many more growth spurts before then and all these numbers can change dramatically. Being only a week behind from the ultrasound is really nothing to worry about, so try and relax, I know, easier said than done. :)
Blank
480331 tn?1310407129
Both my babies measured ahead by 2wks..don't put too much merit into this,  u/s can really only "guesstimate" approximated weight/length.  Your baby will be just fine : )
Blank
377493 tn?1356505749
U/S are not accurate for dating this far along.  My little guy has been measuring ahead since end of first trimester as well.  No cause for worry at all....you might find he stays a bit behind, or suddenly has a growth spurt and shoots ahead...or back and forth.  He is normal!  
Blank
349463 tn?1333575176
I wouldn't worry at all. My baby would go a week ahead or behind several times while I was pregnant.
Blank
951946 tn?1263568983
I concur with everybody that the u/s measurements are not as spot-on as you might think. They are really estimates. In fact, 3rd trimester u/s are notorious for misjudging the size of the baby by up to TWO POUNDS in either direction!

Did they measure your uterus from the outside with a measuring tape? My midwife says that the measurements roughly correspond with 1 cm per week. So at 25 weeks, if you're between say 23cm and 27cm on that measurement, you're fine. :)
Blank
Post a Comment
To
Blank
Pregnancy Tracker
Track your pregnancy
Start Tracking Now
Recent Activity
4769306 tn?1451008167
Blank
KeeLolo, and Hollus commented on KTowne's status
1 hr ago
4548024 tn?1467332272
Blank
renae176, and Hollus commented on renae176's status
2 hrs ago
5575813 tn?1452484685
Blank
Hollus commented on mishymoshymarcy's status
3 hrs ago
Pregnancy: Age 35+ Community Resources