Dizziness heart palputations and shortness of breath ive already been fully checked up by ent and internist plzz help?

Dizziness: If your heart, lungs, and inner ears have been evaluated, then you might be having a panic attack. I first would stop all caffeine--coffee, tea, or soda. Stop nicotine. (smoking) Don't take diet pills or recreational drugs such as cocaine. If you are taking any of these in large amounts then at least decrease them. You may need to see a cardiologist or pulmonologist.

Continued work-up.: I think the term “fully checked up” requires clarification. Your symptoms seem dramatic, so an etiology should be identifiable. Have you had any blood testing? Chest X-ray? 2D Echo? Holter monitor or event recorder? I would imagine there’s more that can be done to determine the cause of your symptoms.