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20w6d Scan Concerns Baby Boy

9 replies

MamaB12 · 05/11/2026 22:32

just been looking through my notes from my last US and it says baby’s abdominal measurements are 166.4mm so 87th centile.. im freaking out🫣 nothing was mentioned at the scan, no concerns.. 😬
will be having another scan at 34w for elective c section!
my first born was 10 days late and weighed 8lb7oz!

can anyone offer reassurance or had the same measurements with baby?

OP posts:
JimBobsWife · 06/11/2026 07:01

Why are you concerned specifically? 87th centile is within a normal range of 1 to 100. Are you freaking out because you expected it to be at the lower end?

I know it’s a stressful time, I had a bad experience at my first DC’s 20 week scan which turned out to be nothing at all. If the sonographer was happy with the scan, you can take reassurance in that.

TraitorOrFaithful · 06/11/2026 07:06

87th percentile sounds ok to me? There's always going to be smaller babies and larger babies, they can't all be 50th percentile. Your first baby was larger than average so it's not surprising if your second one is too.

MamaB12 · 06/11/2026 07:20

JimBobsWife · 06/11/2026 07:01

Why are you concerned specifically? 87th centile is within a normal range of 1 to 100. Are you freaking out because you expected it to be at the lower end?

I know it’s a stressful time, I had a bad experience at my first DC’s 20 week scan which turned out to be nothing at all. If the sonographer was happy with the scan, you can take reassurance in that.

it’s not the size of the baby, i know my second baby is going to be big too as my first was.
it’s just when i looked at my results his abdomen was measuring over average, and thought the was a sign of GD?

the sonographer showed no concerns, but i will speak to my midwife when i next see her

OP posts:
MamaB12 · 06/11/2026 07:21

TraitorOrFaithful · 06/11/2026 07:06

87th percentile sounds ok to me? There's always going to be smaller babies and larger babies, they can't all be 50th percentile. Your first baby was larger than average so it's not surprising if your second one is too.

it’s ChatGPT that worried me when i got it to translate my results it said that baby’s stomach is measuring larger average and can be a sign of GD. 🫣
i know i’ll have a big baby again!

OP posts:
abathofmilkwithladydi · 06/11/2026 07:27

Chat gpt isn’t a doctor. The measurements are not out of the normal range. There is nothing to be concerned about, don’t invent something where something doesn’t exist, especially when there are many people who have received awful news at their scans about significant abnormalities.

MarshmallowsOnToast · 06/11/2026 07:51

is 8lb 7oz considered a big baby? Seems pretty average to me. Mine was 9lb 7oz and wasn’t massive.

JimBobsWife · 06/11/2026 08:51

MamaB12 · 06/11/2026 07:21

it’s ChatGPT that worried me when i got it to translate my results it said that baby’s stomach is measuring larger average and can be a sign of GD. 🫣
i know i’ll have a big baby again!

But someone’s got to be larger than average! That’s how averages work. Im taller than average, doesn’t mean Im ill.

Check with your midwife but if your baby is overall a bigger baby, the abdomen measurements would need to be in line with that.

ChatGPT can say bonkers stuff until you ask it to clarify what it means.

confettispaghettiyetti · 06/11/2026 08:56

All of my babies had a larger abdominal circumference and I was only tested for GD if there were 2 ‘risk’ factors (e.g. over 35 as well).

My babies were all over 9lb as well but I never had GD when tested. Their bellies didn’t even seem huge when they were born tbh!

Edenmum2 · 06/11/2026 09:11

Being average is not a sign of being healthy

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