Natalie, I am so sorry to hear of that last diagnosis---you are right, it is very unfortunate. I agree with your plan of trying everything in the hopes that something will work. At this point, you have little to loose since you are crippled by your pain.
I understand those who feel that an amputation is better than the pain of CRPS. I have seen lots of folks with one leg running races and skiing. I hope that you find some relief without that drastic intervention, but I will add you to my prayers and hope that a release from pain occurs soon. Kelly