6 weeks and huge

brieana • ♡♡my hubby 3 kids and 4 angels - ttc baby #8

im 6 weeks today. hcg levels were through the roof on 23/11/17 and were at 63000 ( theres a high possibility for twins) this will be my 8th pregnancy 4th baby but i was never this big with any of my other kids. is this normal? im normally very small only 5'3 and 60kgs so i didnt have much of a belly until this morning.