About two or three hours ago I was changing and found a red circle in my pubic hair. It's about the size of a quarter around and kinda darkish in the middle. It's kinda itchy too. This thing is freaking me out. I'm sure it's not an STD or anything since me and my boyfriend have been pretty much right next to each other for the past year and a half. And only had one other person like twice. Both times with condoms. So what the hell is this? I'm scared.