Well, I never felt that worried about being gay myself. I just gradually accepted it. Now, I actually worry about being straight, though I know I'm not. I'm not encouraging you to think of homosexuality as a good thing. I'm just saying that in my opinion, it's not as bad as you seem to think.
In any case, have you ever gotten of thinking about men only? Of course, homosexuality is about more than just the sexuality, but your hormones can be a good guide. Can you see yourself being in a relationship with any guy in particular? Loving him? If not, then you're nothing more than curious as far as I'm concerned.
Bi-sexuality is a possibility as well, as stated above.