I had spinal fusion surgery (L4-L5) in 2017 that took away all back and nerve pain. Two months ago I moved some boxes and my pain came back almost as bad as it was pre surgery. It gradually decreased after I went on a loa. Now it doesn't hurt during the day but each night my back kills and I have nerve tingling and pain in my legs. I'm scared I'll need another operation. I'm going for an MRI in 10 days. Anyone have this experience of complete healing then symptoms returning after a few years?