My herniation was also at L4-L5 and going from a sitting to a standing position was excrutiating. I also had the pain in my hip, butt and thigh...also down into my calf and foot. I had the micro-d on June 2nd, but unfortunately have reherniated. I had complete relief of pain after surgery. I could walk again...woo, hoo!
In the meantime, I am trying to walk, walk, walk to avoid another surgery at all costs. The pain has subsided in the last few weeks so we shall see, but I am still in some level of pain all the time and sitting is the worst!
Have you been to PT yet? It made me worse, but it does help some people.
Steroids are great, huh? Too bad they have such horrible side effects.
Good luck and I hope you can find some relief without needing surgery.