It's interesting that you posted this, I have been pondering upon a similar issue myself. I don't know if it's possible to have more than one personality disorder as I am not a mental health professional myself, but I have heard from past therapists and psychiatrists that I've seen that it is possible to at least have traits of more than one. I don't recall if they said it's possible to have more than one at the same time or not.

It sounds like there's a lot going on with you, it's no wonder you're feeling so confused. Figuring this stuff out isn't easy, even the professionals are still learning how to diagnose people correctly.

Take care of yourself and keep posting here if it helps.