Hi thanks for contacting HCM.... You have complaint of sudden chest pain..... So here you have to consult er or pulmonologist for examination ... And according to investigated further ... If rhonchi heard than status asthma like condition can be there ... If rales heard than pneumonia like acute infection suspected .... For these chest x ray and spirometry can be done .... Treatment can be done by antibiotic or bronchodilator therapy according to cause ... If constructing pain there with reffered to shoulder than ischemic heart disease ruled out by EKG and echo (if needed )... Also examine calf muscle ...If swelling present secondary to DVT pulmonary embolism can be there .... D dimer will be helpful.... So take care and consult er for examination which is needed in your case strongly ... Hope your concern solved. ..