What? He's upset with you for bringing this up? First of all, any woman would want to know why her partner seems to have no interest in getting her off, and being submissive doesn't change that. You just might accept different answers than a vanilla woman. Second, and more important in my opinion, I don't think that a Dom should "get upset" with a sub for bringing up ANYTHING, as long as it's done respectfully.

I have no idea whether it's expecting too much to want to be brought off every time you play. Clearly it's an unreasonable expectation in your relationship now. But it sounds to me like before you can even get to the question of whether you "expect" an orgasm every time you have sex, you need to know WHY you're not having one. If it's because he owns you body and soul, that's one thing; if it's because he's a selfish jerk, that's another.