18 weeks and no movement or bump

Al

I’m almost 18 weeks and haven’t felt any movement and I don’t have a bump. This is my first baby so I don’t know what to expect. Should I be concerned? I got an ultrasound 2 weeks ago bc I had to go to the hospital (had lots of pain down there but it just ended up being a UTI lol and doctor said baby is doing great). Is it possible something happened to my baby within those 2 weeks? Ugh I’m freaking out bc I see all these girls post pics of bumps and saying hey feel movement at like 14 weeks!!