Hi Toni, 
Good to see you on the board again!
As much as I'm intrigued by dreams, I'm terrible at interpreting them.  I do know that the emotions and situations we go through in life often reveal themselves in our dreams, so I did a quick search at Dream Moods for you and here is what I got.  Hope it helps you some  =)   
Heart Attack:
To dream that you have a heart attack, refers to a lack of support and acceptance. Perhaps you also feel a loss of love.