Like many people with chest pain, you may fear a heart attack. However, there are many possible causes of chest pain. Some causes are mildly inconvenient, while other causes are serious, even life-threatening. Any organ or tissue in your chest can be the source of pain, including your heart, lungs, esophagus, muscles, ribs, tendons, or nerves. Im with Patoola here though, maybe try another cardio doc....Someone that will get to the bottom of
this. Or through it up to your family physician and see what he/she says.
Hope your better soon!