Strange miscarriage feeling

My husband and I have been TTC for over a year now. I, along with everyone else, constantly think about how exciting it will be to get my BFP. For some reason I can't shake the feeling that I'm going to miscarry.  I don't know if I am just paranoid because our TTC journey has been unsuccessful so far. Has anyone else felt this way? I don't know how to shake this worry. I'm crazy, I know it. :(