I am suffering from fever since 1 and half month. I had tonsils and throat infection on feb. 22. Medicines taken for 7 days. Now tonsils and throat infection is cured. However, fever is there. No other disease or health issues. Checked with 4 doctors, reason for fever is not known. What should I do? Fever is there,  my whole body is heated but as per thermometer, it is 98.4. Fever starts once I wake up increases during afternoon and then decreases at night. Everyday fever is the since feb.22. Weakness, heaviness when fever is high at afternoon. Currently I am taking medicines levoflox 500mg and alkasol syrup since 5 days.  Blood reports are normal. Prothrombin, hematology, are normal. Liver function test - SGPT is 61 U/L and SGOT is 48 U/L. Few tests done