Hi welcome to the health care magic Here allergic inflammation or viral or bacterial bronchitis like infective condition might present and leading you chest tightness and heavy air breath... I would like to suggest you to consult nearby physician or pulmonologoist for examination and work up accordingly like..... -Auscultation -Chest x ray -Spirometry only if needed -CBC with AEC If neutrophilia present in CBC than antibiotic started If eosinophila present than fexofenedine like drug beneficial If reports normal than you might prescribed decongestant like antihistaminic drug for five days Take care Avoid smoking if habit Vitamin C lozenges useful... Hope your concern solved