Awkward Revelations

I recently started exploring a side of my relationship that feels both exhilarating and terrifying. My partner, who's in her early 30s like me, enjoys playing the role of an authoritarian figure during our intimate moments. I'm finding myself enjoying it more than I expected, I mean, she has me kneeling and obeying in ways that make me feel thoroughly humiliated yet strangely satisfied. It's not something I ever thought would interest me, but now that we're doing it, it feels like a Pandora’s box of desires is opening up inside me. Is this normal? Am I the only one who feels ashamed for enjoying such things? What should I do?