After I have a meal, I feel fine. If I take a walk after I eat, I get a stabbing pain in the stomach region. Also, sometimes when I'm lying down, I can't catch my breath. for about five minutes I struggle for a breath of air. My father and grandmother had the same problems. My grandmother died of it. My father found out what it was before it was too late. He found out that a valve on his heart was bad. He had to get surgery and now he has a pacemaker. I'm worried I have the same thing they have and no one will find it in time.