HI i am 15 and i masturbate occasionally, in the past month i have noticed some little white dots on the shaft of the penis and on the sac. i am wondering if it is normal for a guy who is going through puberty or is it an std. Also i got dry skin on my penis and i started to use a new body wash. is it the body wash or an std??? any help is appreciated, and yes i know that masturbating is not good so i decide to stop. :)