Had a heat stroke, doctor prescribed combiflame and antibiotic medicine course for 5 days...and following that there has been constant fever (100,101) which comes almost daily or alternate days towards evening. There was a mild back pain on the left side and going towards Hip and leg. And now it is growing more painful and frequent. Weakness has never gone completely, mornings are ok, but towards end of the day body seems to be drained out. Pneumonia, typhoid, Malaria test are negative. Hemoglobin is 10.2 and even having iron tablets for past 20 days it hasn t increased. ESR cam 120 which alarmed. Right now Mantoux test had been done in almost 40 hours there is no visibile change in the skin. Please suggest... thanks !