both my DD's were "big" for dates. with DD1 i had insulin dependent GD so that contributed to her growth. my scan at 36wks with her predicted her to be around 8pds. she was born at 39 weeks weighing 7pd 14ounces. DD2 was big for dates from day dot measuring 2weeks ahead always. a scan at 36 weeks predicted her to be 8pd 5 ounces and she was born at 38+1 weighing in at 9pd 4ounces.

I know many ppl say the scans are inaccurate, but in my case they were pretty close....well DD2 was a bit bigger than the prediction. Her head was big at 37.5cm