I'm 13, male, and a virgin, and I went swimming in a pool earlier 4 hours ago, and when I was about to get out, I felt a sharp pain in the head of my penis. I checked 5-10 minutes later, and I currently have an area on the side of my penis that looks like it was burnt, along with the area around the tip. It looks like a chlorine rash on the top left of it, and it is painful on contact. (This includes against pants when walking.) Should I just wait the night and see how it is in the morning? I've never had a problem like this in the past.