I had a extra scan a few weeks ago when I was 31 weeks 1 day as I was measuring big the scan said baby was weighing at 3lb 9oz was told she was on the small size are a bit confused as everywhere I have read average babies weight at 31 weeks is 1.5kg so my weight is bigger scan lady said my baby wouldn’t be very big smaller then my others who were 8lb 1oz 8lb 2oz and my last was 8lb 4oz they have all gone up just a little so surprised this one is smaller