i had new onset severe midsternal chest pain that radiates to my back then sweating friday at1230pm. ekg and cardiac enzymes are negative. the pain was continuous for about 2 hours not relieved with nitroglycerin. some temporary relief with dialudid 2 mg IM. chest xray showed emphysema (not new) no difficulty breathing. cat scan showed thoracic and abdominal anurysms 3.6 and 3 cm they are not leaking.gallbladder looked ok. im having a lot of belching. no flatus. i have vomited 4 times it seams to be after i get the dialudid. i am going to be checked for an ulcer tomorrow . so far all the tests are coming back negative and i dont know why im having so much pain. vitals 135/70 (was 198/85 during bad pain) heart rate 58 to 70 sinus rhythm. temp 98.3 o2 sat 92 to 96 on 2L o2. any ideas?