It looks like you need to get the herniated disc taken care of along with your other problems. Everything may be related.
My back is the problem as I injured it as a teen. Now my back hurts and my calves hurt so that I can only walk about half, then the pain sets in, it's getting progressively worse,but they tell me they can't do anything about it. Now I wait another year for another MRI and still waiting for the epidural.