Anyone feel less pregnant at 12 weeks and worried?

Tamatha
Anyone else get to 12 weeks and worried MORE?  I probably am psyching myself out, but I keep trying to feel some hint of a moving baby in my belly. I read about woman who have babies that stop growing at 8-9 weeks and they have no idea. I haven't seen my baby via Ultrasound since eight weeks and am nervous.    Anyone else feel like this but everything is fine?  
I probably should call my doctor and get a heartbeat.......