Treatment of Viral Cough related symptoms

Respected Dr.I had been suffering from sinusitis and i caugh viral cough infection last month and it i had to suffer for fever for 10 days,now I have weakness in body and little cough that comes out continuously for hours has bruised and hurt my throat and i feel problem in swalloeing,what shud be done noe,plz tell,i will be thankful to you…