Can chest pain from a heart attack last for 5 days, or is it just muscular pain?

Heart attack: Angina is the mild discomfort when the heart suffers before the final attack which is usually extremely painful. Angina can last on-off for days, even at rest, and can linger on for weeks even. Symptoms can frequently be so atypical, not like a real one at all, that people may not recognize the deadly warning. Even er docs can miss an angina. Law suits from unrecognized heart problem at er +++.