Problems having an orgasm ..

Is their such a thing as a girl not being able to have orgasms at all ?? I've noticed that I've never experienced one and I've been with my boyfriend for 5 years. And I talked about it with him and he had the nerve to say your probably one of those girls who can't have them. Is their such a thing as that??? I don't want to tell him well u probably just suck in bed lol.. Cause I don't know. Help ?!