Fever since 8 days. He is having fever.

My son is 2 yrs 1 month old. We travelled from Delhi to Mumbai on 24th. He had cough and cold and we were giving him nebuliser. Then from 25th he started getting a fever and some kind of summer heat rahses we visited doctor. Have been giving meds for cough cold and fever . The rashes reduced but fever is still there till now. We also did blood tests but all reports are normal.just crp was 36.7. He is also having some discharge and white matter in one of his ears  and loose pasty motions since 3 days. Normal paracetamol is not working when meftal p is given it works for 6 hours and again fever returns. It is going on for 8 days now. Now Fluvir, zinconia and azee 100 are being given since 2 days but fever is not subsiding. Whole night he is having fever.