There is a dermatology condition, I forget the name, that is like what you describe. They are white, almost like the head of a pimple, but if you were to dig it out with a lancet it would be a solid mass. They can occur almost anywhere on your body, but are usually found in moister areas. I had one on my eyelid and had it removed. While doing so, I talked to the derm who said he has removed them from men and women's private area. The patients were freaked out because they thought they had an STD. But this is not an STD, these are benign, and usually resolve on their own and you cannot pass them on to anyone. Wish I could remember the name so you could look it up, but it may be this and not an STD.