This is definitely some kind of disorder I have. What do you all think?

My problem is religion-based. I started out by promising god little things all the time. Like sacrficies. This snowballed into such a severe obessesion that every decision I make is based on promses. Everything I want to do, I get a strong impulse to promise not to. Finally I was forbidden by my mother to make any more promises. That helped a little. But now instead of promises I ask god to let bad things happen to me if I don't do this, don't do that. I can't even tell a friend a story without battling these thoughts in my head- thoughts telling me to stop telling this story now or i'll ask for bad things to happen to me. I hate living like this. I can't check my email, I can't choose what color lipstick I want to wear, or what clothes I want to wear without being invaded my these thoughts. I cry at night from it sometimes. I can't overcome it and I can't talk to a priest because I think he wont understand and he'll think i'm nuts. I just wanted some people to tell me what you think is wrong and what I should do.