Hi, Thank you for the query and Welcome to HCM. Normal airway is not visible in Chest X-Ray. With the appropriate clinically significant symptoms and signs, Increased bronchovascular markings mean there is airway infection or venous fluid overload. Otherwise it may be normal. Cough is the main complaint of Bronchitis and in acute case it is often caused by viruses and is usually self limited. Associated Fever and chest pain may suggest other diagnosis like pneumonia. In Smoker, Chronic Bronchitis ( i.e cough persist for years) is common. Treatment is Symptomatic. As you have got chest pain, you can use paracetamol or NSAIDs like ibuprofen, naproxen etc . If you are non smoker then you should not be worried. If smoker, then better avoid it for your better future. Hope, this helps.