Wtf is this??

Will someone please tell me wtf this is? It started as intense pube itch, and dry skin(and it was only on my pubic bone area), now it's grey and going down my legs, it looks like a cat scratch but I would remember being scratched there. It itches so bad I can't sleep for shit. I use organic vegan laundry detergent so that's not it. I'm germaphobic and carry sanitizer if I have to use a public restroom and I've been in a monogamous relationship for a year and a half... Someone please help me, I can't sleep and hydrocortisone cream only works for a few minutes :/ any ideas ladies??