I have a medium size knot or ball in my labia. I don't actually have a gyno, so I don't know if I should see one. It's not painful, but I've noticed that sometimes it's there, and sometimes it's not. It's beneath the skin, and is about the size of a dime, only thicker. I'm not sexually active, other than masturbation, and I rarely use public restrooms. Should I see a gynecologist?