Chest discomfort, coughing, dizziness, fatigue, irregular pulse, shortness of breath, nausea, sweating and heartburn are among the first signs of a heart attack. Pain in other parts of the body, such as arms, shoulders, neck, jaw, back or abdomen, can also be early signs of a heart attack, states WebMD.
Women may experience an unusual fatigue or constant tiredness days or weeks preceding a heart attack. Many heart attack survivors also talk of feelings of intense anxiety, notes WebMD.
Heart attack signs differ among individuals, and victims may experience a variety of symptoms. Victims of previous heart attacks may also experience dissimilar signs in a subsequent attack, says Medicine Net.