Jordie, I had a growth estimate scan at 28 weeks too - they said bubs was around 1.5kg, my DS was born at 36wks and weighted 1.6kg so I am happy that this one isnt going to be small.

My OB wants me to have another scan at 34 wks to see if I am having a big bubs. I am going to try for a VBAC so OB a bit worried about big bub with scar etc. My family history is for babies at least 8.5 lb - my sisters biggest was 12lb 8oz!

I am not keen on another scan as I dont think they are very accurate and I am confidant about birthing a big baby. I have heard that being 10% off either way is about normal for the scans.

Is your OB wanting another scan or are you just wondering about eventual sizes?