I Have Been Having Pain In My Legs, For The

I have been having pain in my legs, for the past 3weeks. I have a history of back pain had 2 (back surgery's) second surgery fusion lower back. I went to a Pain center at a Hospital who put in a spinal cord Stimulater in my back a year ago for sciatica. This Pain Center has a PA who works as their doctor who see's the workers comp patients. The PA want to put shots in in back, and I am kind of concerned.The pain seems to be in my hips and in my legs, moving up and down my legs.