Too early??

Konni
Hey everyone I'm 17 weeks and 4 days and I felt the baby kicking last night as I was taking a bath but since then I haven't felt it but maybe once today. Anyone else? Am I supposed to be feeling it constantly now or just every once in a while. Also I'm having some tightening sometimes that feels like contractions but don't hurt. Is it too early for Braxton hicks?