I had unprotected sex 4 months ago. I now have a blister-like sore on my outer labia (majora), almost near where my thigh starts. It is open and will NOT stop bleeding. After leaving it alone, it got irritated so I've tried Neosporin, hydrogen peroxide, witch hazel covered by band-aids. I've researched these symptoms, and have been closer to herpes or crabs but I've seen pictures, and it's nothing like that? It doesn't itch. Just one blister. I'm trying to avoid a doctor.. HELP?!