What are heartburn angina symptoms? Only by seeking a qualified medical expert one is able to identify heartburn angina symptoms.. Heartburn is caused by acid reflux from the stomach contents. Angina is pain felt in the chest area due to lack of blood and oxygen to the heart muscle. With angina, a person may feel nauseous, experience fatigue, shortness of breath, sweat profusely and feel generally weak. Such symptoms are not felt by the heartburn sufferer. Physical exertion, emotions, exposure to extreme temperature ranges, heavy meals and smoking may bring on angina symptoms. Heartburn symptoms come about after eating, lying down after large meals, bending over, being overweight, chocolates, drinking alcohol and caffeine. It is best to seek medical advice to avoid confusion between these two potentially serious symptoms.