I had a pimple right at the public hairline. When I realized it was there from the soreness and checked it, what I saw was an area that was the about the width of my little fingernail and just a little longer than that that was blackish in color. I used a sterilized needle to open it, and then emptied the contents. What I had come out was mainly dark colored blood, that had the white puss in in, but also seemed to have a clot of the dark blood. I drained it until it was producing the brighter red blood. What caused this darkness and gelid like composition?