I haven t had sex of no kind in about several years and all of a sudden I wake up one morning and I have what looks like a huge pimple on the shaft of my penis I am not worried about STD because one has to have sexual relations. Today I was working out side and it popped so I go into the shower and this white stuff is coming from it and I squeezed all of the white stuff until blood was coming out. I put hydrogen peroxide and cleaned it until no more foam was evident. So I put triple antibiotic ointment on it and a lose bandage. But it is swollen now like if you would pop a pimple on your face how it swells. Do you think its infected and need antibiotics??