Previous loss now 21 weeks pregnant

I had two previous early miscarriages and I’m now 21 weeks pregnant and I’m terrified of loosing my baby !😓 constant nightmares and some days I don’t feel her move and some days I do ! I have an anterior placenta so mostly why I don’t feel her all the time maybe dunno ... I just have a gut feeling I’m gonna loose her! Has anyone been threw previous early loss and felt like this and everything’s been fine ? Success story’s ?