I am 20 years old and got a L5 S1 TLIF 4 days ago. I had it done for herniated disc which was causing sciatica in left leg and for a fracture of L5. So it is night 4 and I have noticed some of the old numbness and nerve pain in my calf. The pain and numbness was completely gone when I woke up from surgery. Could this pain be from inflammation or just the surgeon irritating the nerve as he worked around it? It is very frightening as I am terribly afraid of going back to the pain I was in before! Heck I'm only 20 years old! I need to live my life and not be worried about chronic pain.