I feel i have a fever with extreme chills, and a pretty persistant headache . I just recently got over a sickness that the doctor thought might be strep , but the test came back negative. He prescribe me amoxicilin to be on the safe side, but i did not take it. I have aches all over my body and especially in my head anc neck. No sore throat , and no runny nose. Whats wrong with me?