Hi iam a 20 year old male i have a small bump on penile by the vain of my penis iam very worried i never had and STD before last time i had sex was last month i been googling what it might be and i found a picture that looks just like what i have heres the link http://i26.tinypic.com/k3udms.jpg it didn't hurt at first untill i squeezed it and poped it now it hurts to the touch :-( and now its kinda has a black head almost skin color now but you can still notice it i hope its nothing serious i would be very embarrass going to the doctor