It is normal to measure behind? 12 week scan

[Riviera16]

Hi everyone,

I have just been for my 12 week scan but got told that I am measuring 10w +6 days. I know I ovulated the 2nd May but have been told the conception date is the 10th May. Is it normal to measure behind at this stage?

Thanks

With both my pregnancies, the second I walked in for my scan they told me they may measure 2 weeks behind or ahead of what you expect x

I did this time around, second pregnancy. 24 weeks now and everything has been fine since, so not sure what happened. I assume late ovulation, and also I have a high BMI and was only scanned abdominally at 12 weeks so don't think it could've been very accurate. But still a nervous wait until the rescan!