I had unprotected sex with my girlfriend of 5 months about a week ago, and this morning i woke up and i put my hand in my pants and felt some type of sore on my scrotum. I usually have acne on my scrotum, it didnt itch as I recall, but it was extremely sore to the touch and it had almost like a white tip like acne if I recall correctly. So i decided to pop it. It looked like a regular pimple, but I went to school and got back and it was now an open sore, i squeezed it a bit and some discharge/puss came out, it doesnt itch at all, just is kind of sore, and the open sore is sensitive. Can someone diagnose this? If you have any questions please ask, thanks!