I'm a 23 year old female, sexually active, and recently started getting a circular cluster of bumps that look and itch like hives (the wheels type of hives) and after it gets irritated and turns red, I can see almost a perfect white circle around the red. It's about the size of a quarter. I wrote it off as razor burn for several weeks but I think I may have some sort of infection. When the rash is inflamed, it itches and feels like a giant bump under my skin. When I press it, it feels more like a bruise. Help please?