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Category: Pregnancy Complications

Asked by michelle.marie

Q: Measuring a week behind

Baby was measuring a week behind at our 19 week ultrasound.. Should I be concerned? I can't help but worry.

This question was asked Aug. 20, 2016 12:48am
Category: Pregnancy Complications

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Answered by TXkadams - Aug. 24, 2016 5:23pm
I've been told US age measurements are really only good to about +- a week. Each tech will measure slightly differently, where to measure on the head circumference and rump circumference will be different for each tech as well as where the edge of the head/rump is in the blurry image. It's just not an exact science. Plus measurements are more accurate between 6 and 9 weeks, after that kids start to grow at different rates, boys bigger, genetics come into account, etc.

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Answered by babylove14 - Aug. 20, 2016 9:23pm
Both of my babies measured behind. One of just under 5 pounds and the other just under 6 pounds and both born at over 39wks. I had growth ultrasounds with the first one up until he was born to mske sure he was okay and everything was fine. I just have small babies. They were both big for their age by 6 months old. My oldest is in the 90th percentile in height now. I think some people just have small babies. As long as the doctor isn't worried, try not to worry. I'd think he'd tell you if that means something is wrong. You can always ask at your next appt to be sure.

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Answered by Angela18 - Aug. 20, 2016 12:16pm
I agree, unless they've said there are some "red flags" when they've done any testing or anything I wouldn't worry. My last one they thought was already weighing a lot in the u/s and told me he was gonna be a big baby. Yeah right, 7 lbs 7 ounces and he kinda looked like Kermit the frog minus his fat cheeks lol. I wouldn't worry. They also told me the most accurate u/s are in the very beginning like nreiselpn said. I know it's hard not to worry, but if everything else looked fine I'd try to focus on that.

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Answered by nreiselpn - Aug. 20, 2016 2:27am
They say after the first early ultrasound 6-8 weeks is the most accurate time as after the 12 or so week babies grow at different rates based on genetics my last 2 babies were 5lbs they are just small. My 15 year old is close to the smallest in his class still. No worries .....

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