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.