Welcome to HCM
I will be nice if you would have mentioned the duration of your symptoms. If the symptoms are caused by the virus, it will be self limiting and only you require a symptomatic treatment.
I advice you for steam inhalation, salt water gargling will be helpful. Over the counter nasal decongestants and expectorants will be good.
You are having symptoms of lower respiratory tract
infection. I advice you to meet physician for examination, after that if he feels you need antibiotic he will prescribe. I advice you to complete the course of antibiotic and not to leave in the middle if the symptoms subside.
Hope i have given the information you needed.
Wish you good health.