Difficulty orgasming during intercourse..

My SO and I have a pretty awesome sex life despite me almost NEVER orgasming.. I know how to make myself orgasm with a vibrator, but now I'm too used to vibrations to manually get myself off with my fingers during intercourse. I don't really like head, it doesn't arouse me at all, and I can't cum with a vibrator during intercourse, I think because I'm too distracted. Does anyone else have this problem? I've always had a hard time orgasming during sex, and having put up with it for years now I'm getting mad and want to figure this out!! Please help me :(