Trivial, slight, trace leakage of the valves are considered medically insignificant. Almost always will not progress nor cause symptoms.
Not really....a lot of people have this problem. It just means that the valves in your heart allow a small amount of backflow of blood. Because it's classified as trivial, I wouldn't worry about it too much. They have the listings of trivial, moderate and severe. You probably want to keep an eye on it, but it's not really worth worrying about and I'm sure if you asked your doctor about it, he'd tell you the same thing.
Take care