Uvula feels weird and kinda numb really bad back pain on the right side restless legs and nausea?

Uvula: Perhaps you should see your primary doc for these problems....Gentle stretches may help your back.

Back pain and nausea: With real bad back pain, nausea, and fever, i think you should be seen by someone in the emergency room. You need to rule out a kidney infection. A strep infection from your throat can travel to your kidneys as well. Kidney failure which i don't think you have, can cause restless legs. I note that you were on Benadryl (diphenhydramine) and that can worsen restless legs as well. Best wishes and get well soon.