18 weeks and no kicks

I've had a smooth pregnancy with barely any hint of morning sickness in the 1st trimester. Now I'm 18 weeks pregnant and I can't feel my baby's kicks. Next check up is in 2 weeks. I feel so anxious because of the lack of symptoms and I just wish I could see my baby on the ultrasound everyday so I know he/ she is ok. Is it normal to not feel kicks at 18 weeks? How does a kick / fluttering actually feel?