A crushing, squeezing, or burning pain, pressure, or fullness in the center of the chest; the pain may radiate to the neck, one or both arms, the shoulders, or the jaw. The chest discomfort lasts more than a few minutes. It can diminish in intensity and return.
You or someone else shows signs of a heart attack. Seek emergency help right away, without delay.
Your angina (chest pain) no longer responds to medication. This may indicate that a heart attack is beginning.
Your angina attacks become more frequent, prolonged, and severe. As angina worsens the risk of heart attack increases.
Call Your Doctor About a Heart Attack if:
You are taking aspirin to prevent heart attack and your stool appears black and tarry. This may indicate gastrointestinal bleeding and could be a sign that aspirin has thinned your blood too much, problems that can and should be corrected.