For a while now Ive had a large, white, pimple like bump on the side of my penis. Located near the base next to the hair line. Now I have not shown it to my doctor yet (I have a female doctor), but I was wondering what it could be. When I last squesed it a hard stone like puss came out. This is the first time it has produced hard puss every other time it has been regular puss. The thing is before after the soft puss came out it only took about three days to fill back up.

Sorry about the rant. Any help would be nice - thanks

Is it blistery like? Have you had any sexual contact with anyone lately?