I'm in college and I've tried masturbating for a while now but every time I rub my clitoris my legs shake like a spasm and I get this weird feeling it's not really pain but it's not really something I can stand for long, so I always have to quit, my past boyfriends have tried to do several things but it seems without rubbing my clitoris I won't be able to have an orgasm and when I do rub my clit I feel weird. Is this something normal and any suggestions?