hey, my name is craig and i'm 14. over the past year or two i have had little clusters of white spots on the top of my foreskin, and more recently i have had little tiny pimple like things up the side of my penis and also on my scrotum. i have had a fair few sexual encounters with two different girls. but when we had sex we used a condom. what is this? is there anything i can do to prevent this? please help x