Doctors, right?
Had an MRI?
If you feel like your back may be part of the problem, have you tried anything for it? The same VA neurosurgeons that did my neck and back surgeries say that I shouldn't have the problem. But, I know that drs are defensive of their work and the work of other drs. I have caught them in lies and mis-diagnoses.
There is a PT YouTube channel called "Bob&Brad" that provides a lot of exercises, stretches, etc.. I try to absorb as much info as I can from every resource I find, then assimilate it in a form that works for me. Now, I walk, stretch, use a massager and an inversion table. Can't get motivated to diet, yet, though.
Good Health & Happiness