I'm definitely gay. But how do I get over the ingrained "wrongness" of it?

Growing up in a society that made fun of gay people (which even I was guilty of doing), has made me see homosexuality as wrong. But I'm gay as hell. I can jerk off to gay porn and gay fantasies in the comfort of my own home, but whenever I try to go out to gay clubs I get nervous and can't do anything. Something stops me, like I shouldn't be doing this. Then I go home and regret not doing anything, lol.Has anyone else had this problem? I really, really want to start enjoying myself finally. I also feel like a loser because I'm in my 20s yet haven't had a gay experience yet. So when guys are coming onto me and stuff, I feel like a prude. Since I don't know what to do, it makes me even more nervous.