Soreneckman,
I'm sorry you had such a negative experience. I am on my 2nd course of epi's. The first time I had it with sedation and it was much better. This time, I am doing it without sedation, and yes, it is painful. I have my 2nd epi next Monday. For me, this is going to be the last procedure before we talk about doing blocks and burning the nerves off.
I would encourage you to talk to your PM about maybe using sedation next time, so it is not as uncomfortable
It will take at least 2 injections before you will know if you will have pain relief or not. I suspect in my case that it isn't going to help, but they wanted to try it again after the disc was removed.