7. Light
In addition to other signs such as chest discomfort or irregular heartbeat, feeling lightheaded may also suggest a heart attack. “This may mean that your blood pressure has fallen as your heart is not able to pump that way,” says Buffalino.
8. Prolonged cough
If you are suffering from a long-lasting cough, it may not be just a normal cold. What is more, if you find white or pink mucus with a cough, it can indicate heart failure. Nevertheless, check with your doctor and get proper treatment for unfamiliar reasons.