1.Never Ending Cold And Flu:
If you are experiencing an Unusual cough than it could be most probably not a good sign. In fact any discomfort that is not going away easily or coming back frequently can be most probably a red signal. A constant state of cold and flu can be an alarming situation which can be a symptom of an early heart attack. Especially if you are experiencing a cough which is more likely to have a pinkish color in it and it could be more likely the situation where due to some malfunctioning of heart the blood is penetrating into the lungs as a result of which the mucus is getting the reddish shades.