Am I the only one?

So, for some reason before getting pregnant I had this thought I would have miscarriages. I'm not sure if this was just a gut feeling or normal fear. 
Now that I've been "right", all I can imagine is I'll be the woman who has a stillbirth or has a disabled child. It's like I don't trust my body to have a healthy baby. I don't know if this is a "gut" feeling and it's because I somehow know what will happen or if this is just a normal fear and I "happened" to be right twice in the past. 
Does anyone else have these fears? Or did anyone have them and have a healthy baby? I hope I'm just being paranoid