I have little white bumps on my vaginal lips, some barely visible on the outside, and then very small clusters on the inside. They don't itch, they don't hurt, and they seem to be under the surface of the skin. I am not that sexually active, the last time I had sex was in December 2011 and that was only once. Before that the last time I had sex was in 2009. I am pretty sure I have always had these bumps, but you can't be too careful. Do I have anything to worry about?