I'm coming up to 3 months post up of L5-S1 fusion w/hardware and spacer as well. I still need to lay down throughout the day frequently, especially after going for a long walk or anything strenuous. I've done a lot of reading about it since I wasn't prepared for it prior to the surgery (went in for a micro revision, came out a fusion). This seems to be common, but everyone heals differently, some quickly, some slowly... I still have sciatic nerve pain, but have seen dramatic improvements, having the pain go from in my calf recede up to my hip, but I do get dull aches that radiate down to my heel when I lay down if I've pushed myself that day. I haven't started PT yet, hopeing to get cleared at the 3 month check up I can so that I can return to work in a few weeks which is physically demanding and rough on the back so that will make it interesting! Just keep a positive attitude, it definately can put a funk in your routine!