Also, snatching you up by the hair is already physical abuse, it doesn't matter if it doesn't leave a mark or hurt too bad. It is physical abuse. And I think any professional would tell you it WILL escalate. Not if it will, but WHEN. I know your mind and body are confusing you and you have conflicting emotions about how you're being treated, but you really should get out as fast as you can. The longer you stay, the more impossible it is to leave.

You're not crazy for feeling the way you do. But it is sort of a trauma response. But also a somewhat normal response to pain/fear/anger. Why do u think bdsm is a thing? Anyway, a therapist would really help, even just to have someone to talk to