I’ve had 2 fusions, first was L4-5, last was revision to that, and extended to L5-S1. Symptoms are pain in lower back towards the left side, pain down my left leg wrapping around to the front, into my left foot. Pain in my feet when wearing shoes.
I also have cervical stenosis so not sure which causes more pain. I’m sure others have various differences in where pain goes but nerve pain is worst! All the best to you getting yours fixed.