I had unprotected sex 2 weeks ago and she said that she has no diseases/infections. After we had sex, I noticed a small white bump form on the underside of my penis right below the head. There is only one bump, and it is about 1mm across. The bump is only painful when I apply pressure to it (I'm assuming due to the location of it), and it is not oozing, growing, shrinking, or spreading. I also have no other symptoms of an STD infection. Also, right below the bump my skin on the shaft is red and dry, and there were a few small cuts. This also appeared after the sexual encounter. I think it is due to frequent masturbation without sufficient lubrication. What could this white bump be?
Thank you doctor.