I was diagnosed with carpal tunnel after starting 40 mg simvastat...

I was diagnosed with carpal tunnel after starting 40 mg simvastatin, my wrist had never bothered me before, was one step away from surgery. Other joints started giving me problems. As joint problems grew I also was getting weaker. I felt so weak I couldn't get out of bed. Headache, neck stiffness, nausea, and kidney pain. Doctor just told me blood test does not show anything is wrong. I stopped the pills 4 days ago and my wrist no longer hurts. I'm still weak. I think they haven't found the test that proves the way this drug is the cause. How can I be is such bad shape but the tests look normal?