baby kicks

Hiya all im 19weeks pregnant the last two weeks iv been feeling my baby kick its really strong I can see my belly move to my partener kids and family members have felt baby kicking to this is my thrid child I never felt kicks this early on ether of them is this normal. Could it be the is bigger then she/he should be I have my big scan in two weeks time so im dying to no the size of baby. And else feel there baba move this early and is it strong. Baby also has the hiccups at least twice a day....