Eh dah besar dah baby you at 36 weeks, 3.1kg tu dah above average range lah! Normally at 36 weeks baby baru around 2.6-2.8kg je, so yours dah macam ready to come out dah haha. A few of my mum friends had similar situation, one delivered at 37 weeks sebab baby dah quite big, so just make sure you follow up with your gynae closely k, buat sure semua okay with the growth. First baby mesti excited but jangan lah stress, just monitor any signs and ask your doctor if kena induce ke or tunggu natural labour, semua boleh manage one!