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Nausea, vomiting, and upset stomach

According to the U.S. Department of Health & Human Services Office on Women's Health, women are twice as likely as men to experience nausea, vomiting, or indigestion-like symptoms, such as heartburn, while having a heart attack.

This is often because the blood supply to the right coronary artery, which extends to the bottom of the heart, is blocked, Dr. Hayes explains. Unless they're also having chest pain, many women write it off as something they ate when they should be calling 9-1-1, she adds.

Next: Fatigue and sleep problems