Severe Pain, Pain pump good idea?

[TB Seaswirl]

1st problem- I have extremely bad pain that starts at my back and runs up to my head and down my arms and sometimes my feet. I get constant pinched nerves and sometimes the pain is so bad I black out. (it causes severe miagranes etc. I had a pain test done and the pain is off the charts) I have had so many tests that I dont know what to do. The neurologists know that I have some type of nerve problems (over active nerves etc) I have had three specialist doctors believe that I have MS however the CT scans dont show it. I have three other doctors believe that it is something like MS but different. All I know is that I consume large amounts of pain pills and they dont even do the trick. Sometimes they dull the pain but brief and sometimes it doesn't even slow it down. The meRAB I am taking: Methidone, Oxicodone 10/500, tramidole, and large qauntities of IBprofrine. I have tried a mile long list of other meRAB and radio frequency in 8 locations with no revail. I am considering a pain pump but I dont have insurance yet, and they wont pay for it for a couple of years as it is a precondition. I have been to two different pain specialist and one of them told me that they didn't know how to help me and not to go there anymore. The other did the radio frequency proceedures which barely helped but they have grown back. I have discussed with my doctor medical pot (cant spell tonight) until I can get my pain pump. (when it becomes legal in my state) I dont want to do it unless it can really help. Any thoughts???

I have so many other health problems that are affecting my life and sometime I believe ruining my marrage. If anyone has any experience with any of this and know the best actions to take. I am in deep depression because the severe pain and if I didn't have children and a spouse to support I would just end it. I sometimes I often think that might be the only remidy anyways.
I will take any advice.