Hessie, you are on a right path! Lost 6 pounds - this is big progress in our sitation, when we can't really excercise they way we used to.
Definatelly you can get pain even if MRI shows that everything is OK. I am not sure if MRI can show every nerve involved. So you may have that. But i like the fact that your Doctor did not dismissed your pain, this helps a lot, is in it?
I wish you all the best, feel better - you are been through enough already.