I Started With A Dry, Involuntary Cough 3 Days Ago

I started with a dry, involuntary cough 3 days ago and it has become a productive cough with white sputum and deep chested. I feel like I have the flu. Headache, body ache, weak, and very sore throat now. Would tamiflu flu help you think ? I have taken off work and am resting; drinking tea and eating chicken noodle soup.
My email address is YYYY@YYYY
Thanks, Ann