Hello
Ensure that your periods were regular when u conceived
There can be some differences while taking the measurements as it’s depends on the babies position and the plane of measurements during sonography
This 25 or 28 week scan is not a dating scan
Check your first scan done during this pregnancy it will have a date on it
If the scan says baby is doing fine then I don’t thing it is of concern
Regards
Answered2019-06-01 16:34:04
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