A little over week ago I noticed a Pea sized lump on the shaft of my penis . I had just recently shaved very close as well as masturbate regularly. I believe the day before I noticed it might have been 3 times throughout the day. 3 days ago, I tried to pop it. At this time it did not hurt. I took a sterile needle and inserted it into the center. I was able to squeeze a little bit out, It looked the same as a black head being popped but all white. After that it was very sore to the touch and just felt uncomfortable. I have been applying a warm cloth 3x a day and using neosporin on it as well. It seemed to go down in size some what from when I first noticed it, but is still very noticeable. The pain has subsided somewhat as well. Still a bit tender. I have not had any sexual contact in just over 5 months as well.