Couldnt breath & pain in left arm- all test came back neg- ct scan of lungs ekgs bloodwork- no heart attack per dr.- 24 hrs still having same issues?

Cardiac workup: You may not have had a heart attack but still could be having heart pains due to a severely constricted coronary artery. Would talk to your docs about having a stress scan, or ct angiogram which can diagnose blockages that haven't yet caused a heart attack but are possibly causing your pains which may be warnings of an impending heart attack.

Pain left arm: You may need stress test or coronary angiogram to rule out angina. This may be necessary if pain persists. Similar pain can arise from esophageal disease or disc degeneration, but not with shortness of breath. Ekg is often time normal in the presence of cad.

Further testing: Could be pleurisy, but would still rule out cardiac problem with stress test. Could be small vessel disease or vasospasm. Depends on your other medical problems.

Return: To your doctor or emergency department. Your symptoms could be serious. However many non life threatening issues such as anxiety can present similarly.