Hi. First off mild valve regurgitation is absolutely nothing to be concerned about. With regards to your palpitations, one a day is nothing. Even 10 a day wouldn't be a concern. I would learn to ignore them.
Mitral valve leakage is extremely common, and mild leakage is not dangerous at all. Strangely, even though minor leakage from this valve has virtually no symptoms and no significance in terms of healthy heart function, it *is* associated with a bunch of symptoms that include panic or anxiety and palpitations. The reason for this complex is not really known. You can google something like 'mitral valve prolapse and panic' for more information about this. It can be treated with counseling and anti-anxiety medications.
But a bicuspid aortic valve is a different kind of fish. It is the most common heart defect, and it is significant, though not as risky as once thought to be. However, with advancing age, there is a tendency to need surgery, because the faulty valve is associated with changes in heart health and the health of the aorta and aortic root themselves.
You should be under the regular care of a cardiologist all your life, and you should have regular (every year or so) heart tests such as stress and echo to monitor the size of the opening of your bicuspid valve, the amount of backflow into the heart (if any), and the diameter of the aortic root and the vessel itself.
Since you apparently do have a cardiologist and have had recent tests I think the chances are that you are experiencing some form of anxiety rather than a heart function issue.
But there's no reason you cannot call your cardiologist back and tell him about your symptoms and worries.
Reading up on both mitral valve prolapse syndrome *and* detailed understanding of your bicuspid valve--including the fact that there seems to be a genetic tendency--would be a good approach in general, too.