1. Heartburn, indigestion, nausea and stomach pain
The incessant pain you feel in your stomach coupled with the nauseous feeling you have may not have anything to do with a missing period.
Some of the symptoms mentioned above have been experienced by people during a heart attack. Women particularly show more of these signs as compared to men.
While all these things can also happen to you ordinarily, you should also be aware that they could be signs of a heart attack. If you ever have feel any of these things, do not hesitate to call your doctor and have him run series of tests on you just to be sure.