Baby grouth

[Amandajayne1991]

Hiya, after being on 3 lots of fertility treatment and then being off for a year I found out I was pregnant with my first!! :D anyway fast forward 29 weeks and I had my 4th scan to make sure my little lady was doing ok and to my surprise she's growing off the scales! :O Shocking considering I was only a small baby and I had chemotherapy that's meant to stunt growth but after getting home and looking back through my notes I noticed that 2 scans I a row she's been bigger than expected
Is it possible that the hospital could of dated her wrong? I'm only 29 weeks and 2 days but little lady is growing as though she's a week in front or could I just be looking to much into it?