I had an injection in both the left and right SI joint, at the same time. I definitely would accept the offer of sedation. I wasn't offered a choice by my pain management doc. He gave me numbing shots at first which were very painful, but luckily the steroid injection wasn't painful. It was hard to walk/bend for a day or so. Overall, the injections helped my pain tremendously. The sciatica went away within days. I still have problems with laxity in the left hip, but I manage it with exercise and occasional trips back to a good PT.