I am measuring 4cm ahead with my fundal height and on the ultrasound my baby is showing measurements of 4 weeks ahead also. It's a load of bollocks and gives no real impression at all of what is going on. I can say that with confidence because this is my third pregnancy where I have measured so far ahead of my dates and been told that I am having a 'whooper'.

My first massively ginormous, oversized baby was born weighing 3.8kg (8 pound 9 or something like that) and my second even bigger whopper of a baby was born weighing 4.1kg (9 pound something - she was also born via c/section due to being breech and when she left special care 24 hours later, her weight had dropped to 3.8kg so I wonder if she was just full of a lot of fluid that didn't get squeezed out when she was born).

My babies are not small by any stretch but they are also not the behemoth babies that the hospital tells me that I am having.

On the flip side, I have had friends who have been told that their babies are incredibly small for dates only to have them born at 38 weeks weighing over 5kg, measuring 59cm with a head circumfrence of 39cm. They don't take into account much about body shape. My two friends that have had this happen were both incredibly tall women who had a lot of room to carry their babies.