I had the same thing done in 1997, then again in 2005. L4-L5 Discectomy/Laminectomy. Actually, my 2nd surgery went better than my 1st. Like someone here already said, walking will help. I was surprised at how bearable the pain was after surgery. I was walking around the same day at 10 minute intervals. Take it slow. I hope you have a great recovery.
To anyone else out there - be careful with your back!!! Sciatic nerve pain is like having a bolt of lightening going down your leg from your *** to your feet.....lol