Yeah, I think it is really common, especially if you let your imagination run away with all the bad stuff it could mean. I mean, if you think of a psychiatric diagnosis in terms of "one who flew over the cuckoos nest" or any one of a whole lot of Marilyn Manson videos, yeah, I don't think I would want a diagnosis either.

The Byz has a good question in simply asking what is it that you are afraid of? is it more one disorder rather than another? What is the worst case scenario? What is the most likely? It might be worth while to go see someone and start asking questions, because most likely, not knowing won' help much more, because unless you are very tough minded, your imagination may make it hard to deal with the uncertainty.