I have a cough and a very tight chest (with a little bit of a post nasal drip). do i need to go to a doctor? i dont have any other symptoms

Chest infection : In order to provide a medical recommendation, your complete medical history, and a physical examination are needed. In general chest tightness can happen with a viral syndrome and is usually improves with albuterol inhalers. Concerning symptoms are shortness of breath, temperature > 100.4, chest pain, changes in urination. Your symptoms would be concerning with other chronic illnesses.