I Am Suffering With Fever With Chill And Rigor Last

I am suffering with fever with chill and rigor last one month every third day initially now alternate day all reports are normal haemograme lft kft tft normal ct chest abdomen normal j
Urine c/s normal widal negative Ps did not show any malarial evidence itook full course of larigo then afebrile one wk after that itoook artisunate again afebrile one week