I can't feel the baby

Tegan • Australian • Taken • Mumma to 1 •
So at around 18 weeks I posted that I hadn't felt my baby for 2 days and was worried because he or she was SO active all day especially morning and night. I ended up calling the hospital and they said not to worry. Than around 2 hours later I started bleeding. I went to the hospital, they did an ultrasound, baby still had a heartbeat and they sent me home without any answers. They said the baby was snugged up facing my back and that's why I hadn't felt him or her. Now I'm 20 weeks and I still haven't felt the baby. I'm wondering if this has happened to anyone else and everything was okay? They didn't tell me why I was bleeding or anything. I have an ultrasound tomorrow and I'm so scared that the baby isn't going to have a heartbeat or something. Has anyone had their baby be comfy and not feel it for a long period of time? I'm so scared.