With a bicuspid valve at birth, individuals are prone to both leakage and stenosis. A bicuspid aortic valve is composed of abnormal connective tissue, and this same abnormal tissue also composes the ascending aorta making it susceptible to aneurysm formation. Patients with bicuspid aortic valves frequently have aneurysms of the ascending aorta and surgery on the aortic valve should involve replacement of the aorta should there be any aortic dilation. The problem develops when one is in 30's.
Often an individual with bicuspid syndrome has the aorta resectioned due to an aneurysm and valve replacement at the same time. The question of surgery usually becomes an issue when there is an aorta aneursym with the size greater than 4.0 cm and growing, so it is difficult to give you any feed back without knowing if there is a potential of an aneurysm, if there is an aneursym, etc. The danger of rupture with an aorta aneurysm (>5.0 cm) is the deciding factor for surgery, and if possible save the aorta valve...your condition does not mention an aneursym! Your doctor is in a better position to answer your question regarding the bicuspid valve.
It all depends on your symptoms and the quality of your life. If you are not suffering serious discomfort (which I doubt with 47%) then I would have assumed it isn't urgent. However, regular checkups should be organised to keep an eye on things.