After having sex with my boyfriend last night and experiencing soreness during, I checked myself in a mirror and saw that the skin between my vagina and anus was really red. It hurts to have sex and sometimes even to sit down. I had a yeast infection two weeks ago which I treated and just recently finished my period. I am unsure what this could be. I could post a picture too if that would help at all.
I am a caucasian female, 22. 5'5 and 135lbs.