I have some white head looking bumps on the shaft of my penis, but they don't hurt at all. I have had them for a month and a half now, some go away, some don't. I have had six sexual partners in the past 8 years, and I knew all of them very well. The most recent was a month ago, before that I had no problems. I have performed oral on all six of these women, and I haven't experienced any signs or symptoms of an std in either my mouth or anywhere else. Like I said they don't hurt, and if I dare pop them they seem to go away. What could they be?