Hi, my father is experiencing mild fever of around 99 since many days but it is not consistent. One day he has fever and mild headache and other day he is fine... Its been a week since this is happening... He has done a blood test for infection but not for covid. No other symptoms like cough cold. . Which medication should be used (he is given coronil, dolo)? . Which other tests do we need to do except this one? . What kind of diet? . Please help this is making our family worry.