Thanks for your question on Healthcare Magic. I can understand your concern. By your history and description, we should should definitely rule out lung infection (pneumonia) in your case because your are having excessive coughing with green mucus expectoration. So better to consult pulmonologist and get done clinical examination of respiratory system and chest x ray. If chest x ray is showing pneumonia then you should definitely start higher antibiotics like amoxicillin clavulinic acid or levofloxacin. Drink plenty of fluids orally and keep yourself hydrated. Do warm water gargles 5-6 times a day. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.