Hi welcome to the health care magic Here chest x ray is normal Hence no pneumonia consolidation present and tuberculosis also very unlikely.... You are having here bronchitis or bronchiolitis like respiratory tract infection Your Auscultation should be done and if rhonchi heard than for this bronchoconstriction, bronchodilator inhaler might prescribed... (if needed) Investigate with CBC to look for eosinophila... If AEC more than fexofenedine like antiallergic drug prescribed Avoid smoking if habit.... Complete course of prescribed antibiotic If no improvement than chest x ray, pulmonary function test like investigation needed Consult pulmonologoist for examination with keeping my answer in mind Take care