Heart Attack Symptoms

There's an article at the bottom of the front page about how when some women have heart attacks, they don't experience chest pain but rather shortness of breath, nausea and back pain. I think this is important for people to realize, because I wouldn't want to be diagnosed with a panic attack when it is really something much more serious. However, I do get these three symptoms sometimes when I exercise. Now I'm going to question if Im having a heart attack, when it's probably only the consequences of me being out of shape.