butt pimple

Chelsie
Help I have a really inflamed pimple on my butt... I've never ever had skin problems anywhere up until I started going to the gym everyday... But I have a lot of stress in my life right now... And my anxiety is multiplying everything by 10... 
I'm sure it's just from sweat 
But does anyone else have this problem? 
And what are some good body washes or cleansers to use to help this ugly thing go away? 
Thank you