Thanks for your question on Healthcare Magic. I can understand your concern. By your history and description, possibility of bronchitis is more likely. Bronchitis (inflammation of airways) is common after viral pneumonia. And it can also cause headache. So better to consult pulmonologist and get done clinical examination of respiratory system and PFT (Pulmonary Function Test). PFT will not only diagnose bronchitis but it will also tell you about severity of the disease and treatment is based on severity only. You will mostly improve with inhaled bronchodilators (formoterol or salmeterol) and inhaled corticosteroid (ICS) (budesonide or fluticasone). Oral combination of painkiller and anti inflammatory drugs will also beneficial. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.