I recently had an outbreak of cluster-like rash on my right buttocks and lower back. They are small, really red, but not like a pimple. It's really itchy and there is a little bit on pain when I apply pressure to it. I also noticed that my right inguinal node is swollen to a size of a pinto bean. It happened about a day or two after I shaved my groin area. I have never had any sexual contact of any sort before. I'm just concerned what could be happening.