Chest pain or discomfort.Pain in your arm(s), back, neck, or jaw.Stomach pain. Sometimes people mistake stomach pain that signals a heart attack with heartburn, the flu, or a stomach ulcer. Other times, women experience severe abdominal pressure that feels like an elephant sitting on your stomach, says cardiologist Nieca Goldberg, MD, medical director of the Joan H. Tisch Center for Women’s Health at NYU Langone Medical Center in New York.