The symptoms of heart attack may vary between individuals but there are several common signs to be aware of, like chest pain or discomfort, pain or discomfort in one or both the arms, the back, neck, jaw, or stomach, shortness of breath, other signs may include nausea, vomiting lightheadedness, or unusual fatigue. Women are more likely to experience shortness of breath, nausea/vomiting, and back or jaw pain.