I have a two level fusion tomorrow at L-4, L-5 & L-5. S-1. I am getting very nervous. I have been taking pain meds (10mg / 3 daily) for about 6 months and am concerned about post-operative pain after reading some posts here. I do believe I have some tolerance so I am concerned about post-op pain...should I be? Has anyone had the same procedure who has taken similar amounts of percocet?