..and the measurements can differ depending on who does it & how they do it. I was actually never measured.

My DD was a big baby, but my dates were right. She was born at 34 weeks and was 3.5kg already LOL. But she behaved like a prem, and there was no doubting my dates. My OB hinted occasionally that the baby was quite big.. but she was never measured, this is just from him looking at her every few weeks via ultrasound. He never offered to change my dates tho based on it. The only semi-accurate measuring they can do is before 12 weeks. After that the measurements can be way off.