Hi i have a really bad chesty cough what should i do?

What other symptoms: Consider these questions? Fever? Productive cough? Chest pain? Smoker? Shortness of breath? Color of phlegm white vs yellow vs green and finally duration cough for more than a week could indicate infectious process or a more severe viral infection. Short term: stop smoking, consider mucinex, (guaifenesin) rest Robitussin or other cough supressant but < five days, .