Has anyone else never had an orgasm from sex?

Okay, so I've been with 2 guys, one of which is my current boyfriend. I've never had an orgasm with either of them from oral or from intercourse. My ex was lazy in bed so that makes sense, but my current boyfriend is GREAT and I thorougly enjoy it the whole time and I'm always game but I never finish? Starting to think it's a me issue! (I have also tried touching myself during sex-nothing!) Any advice? Does anyone else have this problem?