Have been suffering with fever for at least five days now. Got the blood tests done which included cbc, liver test, typhoid, dengue, etc. The reports came out to be normal and the local doctor suggested that the viral infection is at the offset now and fever shouldn't occur again. But still a 101.4 degrees of temperature was noted later that night. Apart from fever, throat is slightly sore and with light coughing. What can be the reason of this fever now. What should be done?