3. Nausea
While we often associate heart attacks with men, they can also afflict women. Among female patients in particular, nausea is actually quite a common symptom of an upcoming heart attack. Fatty deposits that are around the heart can be what restricts the blood flow to the muscle and this can also prevent blood flow to other areas of the body, including the stomach.
Often the stomach pain gets worse when you exercise and gets better when you rest. This is a warning sign that you have a heart problem rather than a stomach problem and that you should seek medical attention.