pimples on my butt

Im a little concerned, i never had pimples under my butt and lately i seen i had some and somehow it got to my labia majora but close to my butt only that side and i dont know why its my first time getting it and second before i got it i got discharge on that part of my butt when i was ovulating it was all over i showered after then it itch my butt then later i seen i got pimples on it what can it be? my discharge is white and normal not itchy and not fowl smell