Scared!

Hi guys. So I am 18 weeks pregnant and I am really starting to freak out because I haven't felt the baby move anymore and I really don't feel pregnant anymore. I felt him/her move for the first time during my 12th week and it's been pretty consistent since the 14th week. I haven't felt anything for about a week or so and I'm really nervous. I'm a ftm and I just really don't want to lose this baby. I am calling the doctor tomorrow, but I was wondering if any of you have had this and everything turned out okay?