Painful issue. Tmi

There are no pics. 
I am going to try and stay anonymous becuase this is embarrassing.
 I have a pimple like thing on the inside area of my butt-cheek. It really hurts. I can't walk or sit without some amount of pain. I have had some on my bikini region before but not this bad. I have avoided talking to anyone about this becuase it's embarassing and I don't want anyone to know. 
Is there a way to reduce pain and make it go away fast?