Random rash

Brianna • TTC my Rainbow Baby ! Miscarriage 12/26/14 & Ectopic with Left tube removed 5/20/18😇😇

So itchy .. as soon as I noticed a little itchy bump I started scratching and it instantly spread and got worse and inflamed so I decided to numb it and put ice on it. it’s contained to this area BUT I honestly don’t know what it came from I didn’t touch anything on my way back from the bathroom and I didn’t have it before I went in. I’m not allergic to anything other then latex. What could it be 🤔