At some stage of their lives, most people develop pearly papules on their genitals and if you don't know what they are, you may self-diagnose as a STD.
These are small, hard, white, pin-head sized bumps on the genitals of both males and females. They are not painful. Although not a medically accurate term, they are commonly called "Pearly Papules".
They may appear on the labia or perineum of a female, on the shaft or head of the penis or on the testicles. Eventually they migrate to the surface, the skin breaks and they disappear. But there will probably be more.
LEAVE THEM ALONE. Do not squeeze or break skin to pop them, you will leave yourself vulnerable to other infections. Pearly papules are harmless and are simply part of maturing.
Just to be safe, you should consult your family doctor about them or any changes in your genital area.