What is this

well i had a std test done recently i havent had sex or anything in well over 2yrs. I came back positive for hsv1 with no outbreaks that i can remember i have been on antibiotics for over a month 2 separate times each 14days well about 6-7 days into the first antibiotic one sore showed up i thought it was from wiping so much due to lose stool but now a couple showed up but they were never blisters that i know of on my butt

anyone?