Painful unshaped lumps inside my buttcheeks. One lump is on the top right cheek then it makes a U shape and is on left cheek too. Near the buttcrack but a little lower. It hurts to sit, walk, lay down, and move. Its a tiny sore lump at the seat of my butt, or right in between my cheeks, thats where it hurts the most. What is this and how can i make it stop?