Keflex Painful Rash, Skin Peeling, Cotten, Blisters, Index Finger

I cut the tip of my right index finger off while slicing vegetables. The doctor prescribed Keflex 500mg. I took it 4 times a day. I stopped at the 4th day because I had confusion, headaches, and a red rash on my hands and wrists with little blisters. They were painful and very tender. I had to wear white cotton gloves to make using my hands bearable. My finger was healing fine, but the rash and blisters continued even after I quit taking the Keflex. I saw my doctor who prescribed Benadryl and a powder to help with the itching and painful rash. I did this for a month. The rash cleared up as well as the blisters, but my skin started bubbling up and then falling off. This was over month ago and the hands are better but now my feet are doing the skin peeling . I am not treating them at all now. Just waiting for it to stop. Is there anything else I can do? II hope the skin peeling stops soon.