I had a scan with my son at 36w 4days and he was approx 3.6kg. We had him by c-section (planned) at 38w 4d because every time my Ob scanned me she could tell he was growing VERY fast, plus my BP was up. He came out 4.154kg andI was told there was no way I could of had him naturally as his head was already stuck in my pelvis.
Good luck!! Big babies are great!! He was in 000 by the time he was 3 weeks old...hehe...fatty bumba!