Hi, I had an L4 microdiscectomy in January. My recovery has been a bumpy road with a couple of setbacks. I was feeling pretty good last week but bent over to pick up a piece of paper and got hit with some new pain. I am already feeling quite a bit better. My PT has me doing some "self traction". I get some pain when my spine is unweighted, but just for a brief instant, then another flash of pain when I put my weight back on my feet. Anyone know what is causing the flashes of pain?