Heart burn/indigestion is often a sign of acid reflux from the stomach, which can occur at rest or with exercise, and is often associated with asthma.
The most worrisome causes of chest
pain, shortness of breath and tightening of the chest
would be disease of the blood vessels of the heart, also known as coronary artery disease (CAD), and blood clots to the lung
s, also known as pulmonary emboli (PE).