My first baby was 9lb 4oz and i measured 2-3cm out the whole pregnancy, now with this pregnancy i have been about the same again but a older midwife thought i was measuring really big so i was sent for a glucose test and it was normal and then every other midwife said that i was measuring normal and it could be that i am bigger (a nice way of saying fatter ) the baby is laying a different way, or just the plain old simple answer that i may just have bigger babies...which is the one im going for lol.

good luck i hope you can rest easy knowing its all very normal and you are not alone.