So i have had gay sex before with a guy who was also a virgin and i only started noticing these bumps there a few years ago at first they started out small near the bottom of my penis head and barely noticable but now are relitively big and are slowly working up to the top of my head in the back. They are not painfull and i can never seem to get them away, I really need an answer on this cause they are very imbarrasing. Also if this helps i do masterbate frequently