The answer to your question is
[tex]\boxed {\bf 15~to~25~minutes~or~sometimes~longer}[/tex]
[tex]\bf Explanation:[/tex]
Usually, chest pains are one of the many indicators that can occur a few days or weeks before the heart attack if this happens you should call your physician. More commonly though, things such as nausea, other pain in the jaw, arm, and shoulder and shortness of breath.
Hope this helps you!
