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Pregnancy

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

CRL measuring 2.9mm at 5+6 weeks - should I be worried?

1 reply

CherryadeCheerleader · 29/09/2025 19:07

Hey everyone - new here!
A bit of background. I've got one DS who was conceived naturally after 18 months of trying naturally and with IVF. Since having him I've had 3 losses, one a possible ectopic pregnancy, one a MMC and one chemical.

I'm now pregnant again and by LMP I should be 6+3 today. However, I'm pretty sure I ovulated on CD18 (I LH test and temp), which would make me 5+6.

I had an early scan done today and baby's crl was 2.9mm. They told me this equates to 5+3. There was a visible flicker of a heartbeat.

I'm worried the crl is too small, as a similar thing happened with my last MMC.

I guess I'm looking for any positive stories or opinions on whether this sounds negative or positive at this stage? I came out of the scan feeling negative but don't want to mope if there's nothing to worry about!

I have also seen online some references to 2.9mm crl being in keeping with 5+6, so has anyone been told any different?

Thanks!

OP posts:
Notsure31 · 29/09/2025 22:19

I was measured 5+6 at my first scan (when going off ovulation tracking I should have been 6+2) and crl was 2.9mm. I’m now 8 weeks and baby had caught up when I had a scan on Friday.

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