I held my penis after having sex with my wife to hold back my semen as we are trying not to get pregnant right now. I do this all the time. But this time after I moved to ejaculate in the toilet I noticed red dots on the head of my penis. They hurt to touch for a little while then stopped hurting. Have not gone away. I have not had sex with anyone else nor has my wife so it's not a std. What is it?