Lilly,
I was having similar symptoms before my second surgery as I could not stand for more than 2 mins without having a dull, deep aching pain in my lower back, buttocks, groin, stomach and leg. My glute muscles were constantly tight and flexed all the time and I couldn't relax them at all.
I'm not sure how I herniated my disc in the first place. I suspect it was from years of heavy weight lifting, playing high school football and taking hard swings on the golf course.
I'm not sure how I re-herniated it for the second time. I had started going back to the gym and lifting light weights 7 months after my first surgery. I was feeling great and did a quick weight workout and then hit the treadmill. After a few mins of walking, I noticed that my back was cramping up and was going into my groin. I recall sneezing earlier that day, so I'm not sure if that did something or if I did it by lifting weights.
I'm not going to lift weights again in fear of herniating for a 3rd time. My plan is to take it easy, rehab my back and start swimming daily so I can build up my core strength and get some low impact cardio.
Are you going for attempt a 3rd surgery? If so, does that mean fusion or disc replacement as my surgeon mentioned that can't do a MicroD for a third time on the same level.
James