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Talk about every stage of pregnancy, from early symptoms to preparing for birth.

20 week scan- should I be worried about these measurements?

4 replies

IsItMe24 · 28/10/2025 20:12

I’ve just had my 20 week scan and it says abdominal circumference (AC) is 96% but all other measurements are around 50%. So that means she’s got a really big tummy right? The sonographer didn’t say anything but should I be worried that this is out of proportion?
It also says HC / AC is 5% but I don’t know what that means

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Hellothere89 · 28/10/2025 20:18

Mine were exactly the same - AC was always at the very upper limit and everything else around 50%. I was worried but they told me it was fine. I had growth scans from 32 weeks onwards and they told me he was measuring big but he was just under 8lbs and on the 50th centile when he was born.

IsItMe24 · 28/10/2025 20:35

Oh that’s good to know! I was thinking I needed to stop eating! But logically I know they would say something if it was a concern. Well I hope so.
Just with my first his measurements were always around the same % so this threw me a little bit

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Ejk1990 · 28/10/2025 20:48

My 20 week scan was off the charts! But at 32 weeks 20th percentile. The early scans can be large, as their different parts grow at different rates. So I wouldn't worry too much!

Jennie1985 · 29/10/2025 08:00

Very similar to mine . I've had 2 scans since my 20 week scan and they all been very similar - large tummy, small head. No concerns from any of the sonographers. 37 weeks now, we shall see what she is like in reality soon!

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