penis

Well tell me how do you know if it hasn't gone through puberty. And tell me how big is your penis in centimeters. First of all. You should go check with the doctor or GP. It is common to have spots on your penis. There are many diseases that cause this symptom like STD or HERPES or ulcers or papules or pimple like. Most of them aren't so bad. But you should check your doctor because there are many types of diseases. Don't worry too much. Less likely it would be as bad as cancer or STD.

hey don't worry about this; that spot might be off melanin coagulation or of normal hyper-pigmentation. and if you have any off these followings then you are normal and going through your puberty: mustache, beard, pubic hairs , underarm hairs, enlargement of glans of penis, and erection at morning. so don't worry and try to exercise (daily/at least at weekend) till you sweat because exercising till sweating is good for your bed performance and health.