Widowmaker and other Heart Problems Club

My Dad dropped Dead at 39, it's said it's hereditary, so far I have pulled 13 years on him, but have an enlarged heart. He thought stuff was heartburn. There was scars on his heart. I'm Really Glad ALL y'all Made it ( Rip Roy); Love all Y'all, Please don't take warning signs For granted!
Around 2 1/2 years ago now, since i had a replacement valve, put on my heart, they too, told me that i have an "enlarged heart" whatever that technically means in the medical world?
And other areas on my heart are thin, weak, and in the future if anything else goes wrong, around there, nothing can be done.