I have these large white bumps under my skin. They dont hurt, their flat, and my OBGYN says their not any type of STD, but their on my "girl parts". All of the pictures I've seen of skin cancer are brown. Can cancer be white? Also, to clarify. They're smooth, not bumpy, and their pure white, which contrasts from the color of my skin. They don't hurt. They dont bleed. Their solid, not liquid-filled. What's wrong?