In the movies, no one ever doubts that they're having a heart attack -- they clutch their chest, gasp for breath and start to sweat. And you may know that pain on the left side of chest and the arm is a classic indicator. It's true that these characteristics describe a heart attack, but only sometimes. Many people suffer from heart attacks but write the symptoms off as heartburn or fatigue. Women also appear to experience heart attacks differently, which can cause delay in getting treatment. A woman having a heart attack may not experience chest pain, but may instead have stomach, back, jaw or neck pain. She may also have trouble breathing, suffer from nausea and feel overwhelmingly fatigued. When it comes to your heart, it's important to consider the source of all symptoms.