Oh my Gunsmoke. I really feel for you I hope the new meds work better for you! I went through a terrible back injury 8 years ago and went through many different types of treatment to fix it so I know where your coming from. I was on so many meds at one point that it was starting to effect my liver. I'm all better now for the most part so hopefully you will see the same outcome.
Hope your back continues to be livable (I've just made up that word) but so you can cope