Acne isn't part of puberty, it usually just happens as people grow older, when their skin becomes more oily. Also, Do you wear makeup or facial creams? If not, then that may be a reason why you don't have acne, as makeup and creams can clog pores, causing acne to develop. Acne doesn't have much to do with puberty. Acne can actually really hurt, but sometimes it doesn't. It can get all scabby and start to hurt, and bleed. You're lucky, I would love it if I don't have acne.