Heart attack symptoms

This picture shows the main symptoms of a heart attack. People who are having a heart attack often have only some of these symptoms. The pain, pressure, and discomfort caused by a heart attack mostly affect the left side of the body but can also affect the right. If you think you are having a heart attack, call for an ambulance (in the US and Canada, call 9-1-1). Do not try to get yourself to the hospital.