I developed a rash where my butt meets my lower back. Over the course of three days, the rash has spread down one of my butt cheeks, mostly along butt crack, and started to blister. Today I also developed a little cluster on the inside of my thigh. It does not itch or hurt. The day after I noticed the rash starting, a lymph node in my groin was swollen, making it painful to walk. Now the pain has spread to my hip and into my butt check. I have never experienced this before, nor do I have a fever or flu like symptoms. I have no additional shmptoms. I also have not had intercourse for a year and a half. Any ideas?? One doctor immediately said herpes and put me on anti viral drugs, antibiotics, anti fungal cream and steroid cream. No improvements in two days, rash worsening. I was in the Gulf of Mexico the day before I noticed the rash, and sat in a web bathing suit for several hours