So the typical symptoms for heart attack includes chest discomfort radiating down the arm associated with sweatiness, nausea, shortness of breath, very, very uncomfortable feeling. If you have any of these symptoms, you should call 911 ASAP. If you have the atypical kinds of symptoms, like the nausea, shortness of breath, and you're not sure what you have, it's important to seek medical attention right away because we say time is tissue. The quicker you get diagnosed with the heart attack, the quicker your artery is opened up and reperfusion is achieved, the more likely you are to recover 100% from this incident.