Hey, A while back when I went to the toilet, right after I felt a sort of pain in my penis.. so I decided to do a pee.. Nothing came out, but after a little while some sort of white stuff came out, I wasn't sure if it were semen or something else.. but it was VERY painful to get out. It May have possibly been semen the didn't fully come out and sat down there for a little while, because it was sort of like half dry semen but was wet. It has happened once or twice, but not for a while.