I have a completely different fetish, but I know what you're talking about. When I was much younger (possibly around your age) I used to feel a lot of shame for my fetish. This was especially so right after masturbating to it or whenever I was not feeling horny and thought about it. I never feel that shame any more. I think it's just a phase you have to go through when you are relatively young and different from the "norm." I would not recommend trying to get rid of the fetish. It won't work and will just cause you stress. Like others have said, just make friends with other people who are in similar situations and try to just accept that it is a part of you, and it is perfectly ok.