Opening of penis swollen after sex

Patient: Hi I am trying to figure out if I have an STD. After having unprotected sex with a friend (dumb, I know) I noticed an odd tingling sensation at the tip of my penis. This was about a day ago and since that day when I urinate right before urine comes out I feel a sharp pain that only lasts about a second.

Symptoms: Opening of penis swollen. (the “lips”)

Doctor: