Not in my back, but I have had shots in both ankles and in my right wrist. The shots I had in my ankles had very little pain, the doctor did an awesome job. The problem is they helped for about 2 weeks and then nothing. The shot in my wrist hurt like you wouldn't believe. When the doctor was finished he said "boy you are tough!" I guess you are supposed to scream or cry or somethig. I just wanted to kick hime someplace painful. It helped, but it was not worth the pain of that shot.
Hope you find relief!