Congenital Bicuspid Aortic Valve

I'll attempt to keep is as short as possible. I'm a 37yr old male, and i had aortic valve replacement surgery at the age of 36. At the age of 25, after serving a better part of 7yrs in the military, while still on active duty i was diagnosed with a bicuspid aortic valve. While on active duty i had 2 syncopal episodes, and an assortment of dental procedures without antibiotics before treatment. I was medically discharged from the military under honorable conditions, but they denied me medical benefits for my heart problem stating that all of the following conditions happened prior to me joining the armed forces; bicuspid aortic valve, mild aortic stenosis, mild-moderate insufficiency, and an enlarged left ventricle. My question is, "once diagnosed with the bicuspid aortic valve is it possible, with pinpoint accuracy, to say when the stenosis, insufficiency, and enlarged left ventricle took place? And would it be unreasonable to think that the stress and physical extertion placed on my body, along with the lack of antibiotics with dental procedures aggravated my heart condition or sped up the timetable which caused me to get aortic valve replacement at the age of 36?"