Hi there,

I've never been to a professional myself, neither BDSM nor Vanilla, but I can only encourage what Silke said. After all, they provide you with a "service", and in such a case, I would expect them even more to comply to your wishes, interests, questions and even fears.
So go on, indulge yourself.
Or maybe better, let yourself be indulgingly (?) punished.
And, from some kind of voyeuristic point of view, share the experience.

Oh, and, by the way,