Baby size!

Jessica
For those of you who have had a growth scan towards the end of your pregnancy, how are your babies sizing up? I have an ultrasound on Friday (I'll be 38+1). We haven't seen him since 19 weeks and I'm SO excited! I know babies sizes differ majorly sometimes towards the end, but I'm curious to hear what they estimate your babies at! Also, did they tell you how off they could be in their estimate?