Hi Mstroik,
Just some perspective which might help.
A BAV is one of the most common congenital heart defects, (arguably the most common congenital heart condition affecting almost 2% of the population, and often inherited from one of your partents) with many people never knowing about their BAV condition as they live their life without any symptoms.
Also, there are quite a range of severities of the condition with either regurigation (back flow), or stenosis (flow obstruction), or a combination of stenosis and regurgitation, and quite a range of symptoms from nothing through to being totally bedridden. The good news is they have diagnosied your BAV, presumably because they heard the murmur, but sometimes it is discovered because people are becoming breathless or are getting chest pains etc. I coped with the news by finding out as much as I could, as I had virtually 30 years to learn about it, as my BAV was only found during a very thorough life insuarance medical, and even then many otehr doctors could not hear the "trivial" murmur, and it could only be heard if the stethescope was placed in exactly the right place on my chest while I was leaning forward (so my heart came into closer contact with my chest wall), but it eventually, over many years , became symtomatic, with breathlessness under exertion.
So I have had many years to stay fit, live my life unaffected whatsoever, and had time to ask the experts ....we planned the surgery well in advance, and by having regular cardiac echos (not tranesophageal but just echos through the chestwall) we were able to replace the valve before the aortic root had started to become enlarged. My left ventricle had started to enlarge due to reguritation, which is a normal adaptaton, but it returned very quickly to its normal size (before I was even dischaged from hospital). I knew othersa round mewould be "panicers" etc, so apart from my wife, I didn't tell anyone else, just to avoid the questions and the awfulizing type stuff...and we told my kids a few days before the surgery, and didn't make a big thing of it...and for me, it turned out that the surgery wasn't a big thing fortunately...honestly, the surgery all went very well.... as the vast majority of these surgeries do...espeically if you are young and fit and healthy. I did get some memory problems for a while,which, I am told, is not uncommon for some people after any big surgery, but thats all good now.
So focus on staying fit, eating right, not smoking, stay active, and trust the experts....remember, many people have no idea what might be wrong with their body, and some people, unfortunatley, can't do anything about their medical conditions or diseases, but we have a very good treatment option, we can get a new, better valve, from a surgery that has a very, very, very high success rate...take care, stay in touch, ask questions and focus on doing things with your loved ones, go out, go camping, go on a holdiay, have some fun!!
...by the way, where abouts are you located in the world?