Atrial septal defect

Hi. I need some advice or a shared experience from anyone out there with an atrial septal defect. I am a 30-year-old healthy woman with a small atrial septal defect. It was detected when I was a young child (about 4). I had no symptoms, so the doctors took a wait-and-see approach. At about 12, it looked as though it had closed on its own and I was no longer under the care of a cardiologist. Two years ago, my doctor discovered that it had not closed and was just masked during those years. It's a small defect and I still have no symptoms and am very healthy. The doctors still just want to wait and see what happns. Because I am asymptomatic, they dont' see a need to repair it. The thought of having this thing in me kinda freaks me out, with the risk of infection and stroke. Is there anybody out there in a similar situation? How many years have you had your defect without repairing it? Any damage to the heart? What about pregnancy with an ASD? Any info would be appreciated.