Are you feeling a tight, painful pressure in your chest? Do you feel pain in the jaw, neck, shoulder, arm or stomach? Maybe it feels like you have heartburn or indigestion. Perhaps you're short of breath. It could even be a feeling of nausea or dizziness. All of these symptoms are signs that you might be having a heart attack. Stay calm and call 911 immediately. Do not try to tough it out. Recognizing a heart attack and reacting calmly and quickly can save your life! Be CardioSmart.