I would recommend you find a cardiologist who specializes in BAVs and Aneurysms, not all of them are and certainly will have way more answers than your GP, it makes a huge difference. I was lucky to find one whose research is all around the topic and is also very focused on the genetic component. He sees me every year since having my aneurysm repaired to check my valve and every 3-4 years gets me a complete boody scan to make sure there are no new ones.