Help with feeling like something bad will happen

I really don't want to post this but I really want help.

I think I have OCD. For a long time now I feel like if I don't do something in the self imposed time limit something bad will happen to me. I never knew what "bad thing" would happen I guess whatever negative thing happened in my life was caused by my failure.

More recently I have a lot of trouble with messing up everything. If I'm reading anything and mess it up I have to start the whole sentence over again and it has been driving me crazy. I can't read anymore!

I recently had a lot of bad dreams and fear of the devil. So now if I don't finish the dishes by the time limit or go to bed by a specific time I'm afraid I will be nailed to a cross or give my soul to the devil and it csuses me sooo much distress and panic I can't relax at all lately. I've been saying prayers constantly and it doesn't make me feel any better! Please help!