Unfortunately many doctors still don't take symptoms that could be indicative of a heart attack seriously.
There are several posts in this thread, that relate such experiences:
Early Symptoms Can Warn of Sudden Cardiac Death
http://www.freerepublic.com/focus/f-news/1698367/posts
I think that since my ER happens to be in the Seattle area, we are more "cardiac conscious." I don't know what it's like in other regions. Can others here help me out in as objective a way as possible?