the other night i was laying in bed and i noticed a pain near my butthole, i thought it was just a hair being pulled but the pain wouldnt go away. two days later i have a little blister like sore on the edge of my butthole. i dont know where it came from, or why. i dont do anything but whipe my butthole. it stings when touched. do you have any clue what it is?

Optional Information:
Male , Age: 17

Already Tried:
nothing