Uterus measurement

Kat β€’ 3 πŸ‘©πŸ»πŸ‘§πŸ»πŸ‘§πŸ» & 🌈 πŸ‘§πŸ» after ttc for 2 yrs! πŸŒˆπŸ‘ΆπŸ» #5 otw! (10wk &14wk miscarriage).
So I'm a few days shy of 16weeks. According to every chart on Google, at 16w my uterus should be halfway between pubis and navel. My uterus, with one baby, however is already AT my navel. Anyone else?Β