I'm not sure but because of not washing the private parts after intercourse it leads often to pimples come above the penis part below the stomach. It pains and after sometime it gets bigger and when I pinch it tightly some milkish color liquid/puss comes out along with a lot of blood. After that it dry and sometime again near that part same thing comes. Attaching picture for reference. Please suggest something to apply if it happens and also any cream or something to lighten or completely remove the mark.