When did you feel your baby move?

I’m 17 weeks. I’ve thought I had felt it before but wasn’t sure, figured it could be gas bubbles or something. I haven’t felt anything in a couples days now. But everyone tells me I don’t look pregnant and now I’m just starting to get concerned something happened. I’m 5 foot 6 and was 215 before I got pregnant, went down to 205 and at 209 now, so I always kinda had a belly, but some people I see really have a bump now and I’m still not showing. I had an ultrasound at 14 weeks and they said everything looked okay. I have an appointment tomorrow for my monthly ob check up but just scared right now.