I just had a 35-week "growth scan", and the ultrasound doctor said my baby is 3.8kg (plus or minus whatever the error is).

I'm 35 weeks and two days, going on my "official" dates. 35 weeks and 6 days going on what I think is my real due date.

How huge is this estimated size for this gestation?

How much do babies grow in their last few weeks in utero?

I am not small myself, either in weight or in frame. I have fairly broad hips, etc. I'm not really worried about my ability to birth a large baby. But this does seem awfully large for only 35 weeks, to me.

I do know that scans can be way out. Not sure how often they are way out, though. Has anyone seen a study of the accuracy of scans at this stage?

It is a bit worrying, much as I'll try to be sensible about it.