no symptoms at 6 wks

Hello January mommies, I'm currently 6weeks and some days. I don't know if I should be worried because at this point I don't feel sick at all. No morning sick what so ever, I don't have any symptoms other than being tried.This is my third pregnancy, with my first 2 babies I was always sick. I'm shocked because I feel awesome. Does anyone feel like me at this time? Should I be worried?