Thanks for the response!

I finally found out that there is a name for what I'm dealing with: Intrusive thoughts.

Looking at people who have had intrusive thoughts and the wiki page really helped. It's pretty obvious that trying hard not to think of the thought will keep it in your head, it was just hard for to come to terms with.

Because the thoughts are so disgusting, it still is extremely annoying to me, but I'm no longer on the verge of a nervous breakdown.

When it comes to therapists, no, I don't have one. I think it would be nice but I still live in my parents house, there's no way they would pay for it, and I couldn't. Sometime in the future (although I'm still a bit squeamish about the idea) a therapist might be good idea. For now, I'll see if this board can help me stay sane.

Thanks again!