Nervous all the time

I am 19 weeks today. I had my last scan a week ago today and the heartbeat was great but I still find myself nervous all day every day. I have had three miscarriages, one ectopic pregnancy and one successful birth thank God. My son is 2 1/2. I wish I could enjoy this pregnancy but I’m constantly worrying something is wrong or will go wrong. I have not felt her move much at all and when I do you feel something I’m not even sure if it’s her. Is anyone else having constant fear/similar situation?