Back Pain And Left Leg Cramps

Started having back trouble last sept in 2006. Had a mri done and orthapedic doc, said i had a bulged dics on L-5. he gave me to shots in my back and it helped till may of 2007. Now i have leg cramps again, have to walk with my left leg half bent. cramps wake me when i sleep. even hard to find a place in the bed to get any rest. Pain meds make me light headed, but dont help with pain at all. its hard to get around much now, i had been run over from a drunk driver several years ago, and lost all movement in my right foot. and i wear a brace to even be able to walk now. I go back to the orthapedic doctor this wednesday, to talk with him about the pain. dont know what to do next. i know the shot r temp. and dont last long. kinda scrared of surgry, cause my brother had back surgry and he is worse than he was before surgry, and now he"s disable to work any. i have been out of work now for a mounth, from hurting. If anyone has any input, i would like to here from u.