i had a blood patch 4 years ago not under an xray machine in a ER room Within 10 minutes of having it i had pain in my right leg back butt groin The doctor offered to keep me at the hospital but reassured me it would be ok. i have had therapy, nemours nerve test mri . the mri shows there is a protruding disc encroaching on the nerve of nerve. my question is, What could of happened to my back with all this leg pain for 4 years, limping cant walk far without pain have to sit on my left side sleeping on my left side ... what could of caused this.