<s>[INST] Hi i was at my schools post graduation party until 5 this morning, and directly after I experienced chest tightness, difficulty breathing, and I have chest pain when I jump around. What is wrong with me? I am not an asthmatic nor did I eat anything to cause an allergic reaction. [/INST] Hi welcome to Chat Doctor... You are having complaint of chest pain and breathlessness of sudden onset ... So you should consult to good pulmonologist for physical examination and auscultation ... According to examination you might need investigation like .....1. Chest x-ray 2. Spirometry 3.blood pressure measurement 4.EKG 5. Echo if needed According to cause treatment given. If bronchitis there than according to severity bronchodilator or antibiotic needed.  Take care So without delay consult physician or pulmonologist nearby ... </s>