I have a scaly looking type of rash from my labia majora to my butt cheeks. Nothing inside the vagina, although I get an itch right by the opening which is intense at times. And lately its been intense and painful if I scratch directly on the rash. I've been using a yeast infection cream to relieve pain but it's still there and worst. It's been about a week. It all happened after I used a razor that I left in the shower and then reused. What can I do to relieve the itching? Or to lower the inflammation by the scaly areas?