I don't have a lot to suggest as because I'm not in the US, I don't know your prices etc. For me at the moment, I take endones for breakthrough pain.

The main meds we all do the trial and error games with are the anticonvulsants (neurotin, topaman, lyrica etc), antidepressants and opioid based meds, such as oxycontin, ms contin etc. Then there are extras like muscle relaxants, tramadol, infusions etc. Previously I had good pain relief from anticonvulsants but not anymore, the opioid ones are the only ones that give me pain relief but now my body isn't liking them anymore

Sorry I can't add much to the discussion, but I hope it all settles down for you soon.