Interesting read. Unfortunately, I know the feeling some of these people had. I didn't think I was having a heart attack either until it hit me and I blacked out while driving home from work one day. After I came to I knew immediately what it was, pulled over, and called an ambulance. I honestly thought it was indigestion... It's the most scared I've ever been without a doubt in the world. Can't imagine knowing you're having a heart attack and can't or don't know how to react.