What Does Chest Pain Along With Vomiting And Dizziness Indicate?

For a few months I have been experiencing almost all of the symptoms of some type of heart disease: chest pains, sharp in the middle, also a lot of pressure/nausea and some vomiting/light headedness/almost passing out/dizziness/ numbness in my back, arm, shoulder, neck, jaw, and ear/pain in my back, arm, jaw, neck/sharp shooting burning pains in my stomach (after exertion)(unlike indigestion). They have told me that I have a right bundle branch block. I had a nuclear stress test and saw the initial images - the left side of the computer screen (i m assuming the right side of my heart) was about 95-98% white, with a few black splotches(hazy like impressionism - not defined). The opposite side of my heart was an even dark red brown color. I have a murmur and slightly enlarged heart. I had chest pains during the stress part of the stress test. I respond positively to nitroglycerin and baby aspirin. I have had some blueness in my fingernails. I have also had 5-6 abnormal EKGs (no ischemia). I also have edema. Yet, they keep telling me that it s not my heart. I know there are more things to check like the vessels with a CT scan and the valves and maybe more. Why do they keeping my it s not my heart when I have all the combined symptoms?