RA? Metabolic Myopathy

I have had so many tests done and so many different answers I'm at a loss and so are my Drs. I have tested positive for RA in the past year - now I don't. My hands are swollen and painful and I experience changes in pain and swelling with temperature. Tingling and numbness only in my right hand. Where it gets weird is that I am having serious continuous cramps in my right leg that prevent me from walking properly. My right leg is also now considerably smaller than my left leg. I feel like the leg is going to snap and I get numbness and tingling in my right foot. Massive pain. Potassium, calcium and every is normal. All my enzymes are always all over the place. Liver is usually high. Total ck after walking to one of my appts(half mile, right leg started cramping) was 2258. My condition gets worse with exercise, muscles burn. Dr did an emg, but the results were in no means definitive. Wants a muscle biopsy but I cannot afford it. Oh and total ck is not high at rest. Lactic acid is elevated, not very high. I don't know what to do. I am in so much pain. My joints hurt too. I got a shot of humira and it helped for about 3 days and then I all of a sudden got staph in my right elbow bursa so I had to stop it. I can't extend my leg at this point. Icy hot, salonpas, nothing helps. I am also experiencing fatigue and aches all over my body. What advice does anyone have? What do you think could be going on?