Dating scan can they be wrong - Pregnancy dating scan - NHS


When you are offered a dating scan and the sonographer gains a picture of the baby’s development, they can use this to accurately calculate the baby’s age based on their size and formation. This allows more precise timing for later scans, doctors’ appointments and check-ups on both mother and baby. As medical professionals have a precise idea of the baby’s development over nine months, knowing the foetal age makes it easier to judge if everything is fine with the baby. The scan also gives a due date, which is sometimes a small range of dates due to a difference with your own dating attempt. An accurate due date is crucial so that, in the event of being overdue, your doctor knows whether you are drastically overdue or simply a few days late.

I had my NHS dating scan today, I am 12 weeks and 1 day. I know this for a fact. My scan said the baby is 12 weeks and 6 days though - impossible as DP was working away and we only did it once that month sorry TMI! So my EDD is now Oct 28th instead of Nov 2nd. Does this matter at all, 5 days difference? Or is it too early to be meaningful? Will they revise my EDD at wrojg 20 week scan? The reason Cn ask is that my other two babies were big - 10lb 8oz and 9lb - I was wondering if perhaps I was having another whopper.


Dating scan can they be wrong

Dating scan can they be wrong