Hello, about a month ago i had this lump on my penis(not around the tip) what it appeared to be was just the same skin colour but just a bump, about last week i noticed it grew bigger, and as the days passed by it grew. What happened was it took the form of a mega zit(it went from white and with a red ring around it, soon turned purplish white. Two days ago i realized it had become a problem since it was starting to hurt. Being the weekend i couldnt go to a clinic so i decided to wait it out. However, on Saturday it popped by itself im guessing because it got too big. Seeing theres my chance to get it over with, i squirted out all that was in it. after it still looks like a lump but the color of it turned black. Now its monday and the thing continues to get smaller. but remains black. Can you help and try to give me an insight of what it is? its been worrying me lately thinking it might not just be a zit.