Legs numb, but burning 5 Mo. post op

[Eastex]

Has anybody had a numb feeling in both legs after surgery? It is strange because they burn all the way down too. I am at 5 months post-op on the sixth of this month. I recently stopped my PT until the pain doc OK's me to come back for time in the pool. I also went three days without my Opana-ER at the beginning of last week. He also put me back on Neurontin about 2 weeks ago. Am I feeling some side effect from it? I never felt it pre-op. It is strange, because before my fusion at L5/S1 I only had pain in my lumbar area, the right leg and hips. Opinions would greatly be appreciated.