Fever going for so long needs to be investigated further. Usually viral infection don't last so long. We need further investigation like ESR, Blood culture,
Liver function test.Mantoux test for Tuberculosis. Widal test for typhoid. May be repeat x Ray. Needs good antibiotics broad spectrum to cover common germs in good dose and duration. Syrup chrricof KS for cough and some old medicine to start. Meantime all reports available can decide further course. To hospitalised or OPD management.