Its just a bee sting......I had 3 and the first two gave me about two weeks of relief ea....the third one gave me a couple days of extra pain and then a couple of relief...so it was a squash!...but it gave them a little trouble when they were doing it....finding the exact location or something.
It is a very fast procedure once your actually in.
Its worth the attempt even though most agree that its a temporary bandaid.
Your next soon to be question will be asking about the discogram I bet.....you wont find any relief on that one!...but you will find great answers to your problem so it is worth the pain most experience.....my pain on it was not as bad as most and im a wimp.
.....good luck tomorrow and dont sweat it.