I also have a bicuspid aortic valve and my cardiologist (whose research is focused mainly on aortic valves and aneurysms) told me it is known people with bicuspid valves have a higher risk of aneurysms, not only aortic. There are also genetic factors , in my case I have both. I also had a brain aneurysm which I found because my brother had one (his valve is tricuspid though) and I got checked, we have had other cases in my family. Both of my aneurysms were fixed, embolization for my brain one, open heart for my ascending aortic one. People with Marfan syndrome also may develop aneurysms in some cases multiple. Beyond those factors I don’t think they really know why else they appear. I get checked every 3 years for any possible new ones

Thats great to hear ! Wishing you well