Hm. So, do you think this is ocd? Is there a genuine threat? Do you know any person that has been bitten by a fat or fox (usually if you do not mess with either of these, they don't mess with you!) The idea of a microbat coming in and biting you is ya, anxiety. It's a what if, irrational fear. What do you do to treat your anxiety? It's treatable. They make good medications with fewer side effects these days and I'd consider that. AND, the gold standard for ocd treatment is exposure response therapy. Have you looked into that?