You need to be evaluated for the cause of fever. Visit a physician who will order the necessary investigations to make a diagnosis.

Hello there....., Part of your body’s response to infection is to create a fever by raising body temperature. Chills are caused by rapid contraction and relaxation of the muscles to increase body temperature. A fever can help to kill infectious pathogens or prevent their spread because most pathogens that cause infection survive best at a normal body temperature....Consult Physician for further evaluation....