Keep getting cuts on my vagina

I haven't actually had sex before me and my boyfriend tried to once but I wasn't feeling it so he stopped. The tip barely went in me this was over a month ago. I give him head all the time so I know it's not an std. Cause well we haven't had sex. I had uti not to long ago and last week I started getting brownish discharge and I keep getting like what felt like cuts down there. It would burn if my owe touch a side of my vagina and than like a few hours later it would be gone and so on. And than a few days later it would happen again. I look down there and that area that bugs me is red. It's the skin right before my anus ! Idk what this is