Ah do I know that procedure. You go into a doc appt. thinking that you know they found something but you don't know how bad. Then they give you the news and its all encompasing! For a while, it seemed like everytime I went to an appointment, they found something else. It made my head spin. I am sure if I go to another specialist, they will find something else.
I am glad that you finally have answers to what is going on with you. That knowledge hurts and helps at the same time. But at least knowing instead of guessing is better!
Good luck with your new med, PT and your counseling.