I had a microdiscectomy on my L5 S1, my other 2 discs on top have issues to include bilateral forminal narrowing. I know that the words small, minimal etc also are up to someones interpretation. Now I am 7 weeks out and the past few weeks I have noticed that after about 3 miles of walking my legs really hurt. My hips, calves all of it are EXTREMELY achy and uncomfortable. Now prior to this I was a marathon runner, my disc actually blew out while I was running, so I know what sore tired legs feel like. This is weird. It's almost like my legs are not getting stronger. If I lie down for a while it gets better and din the morning the feeling is gone. I keep walking and push through the extreme feeling in my legs(I've walked 9 miles) because I thought maybe it was just my legs getting stronger, but the prb is they aren't and the feeling is ONLY when I"m walking or doing some kind of exercise standing. I don't have this prb while swimming. Could this be the narrowing? Is that what it feels like??