I have a small lump on the top of my butt crack. It's on both sides, reddish, and feels kind of raw. Kind of looks like a circle around the top of my crack, but I see it more when I spread my checks. At first it only hurt to sit backwards, like relaxing on a couch, but now it even hurts when I lay on my back or bend over (it's been 2-3 days). It's kind of swollen & raw (feels hard). Doesn't hurt to touch it, walk, sit up right (unless the chair is weird), & doesn't itch or smell. I'm wondering if it's a rash & I should just buy diaper rash cream? But it doesn't look like a rash & doesn't itch. No change in detergents or lotions. Didn't bump it against anything either.