it's a lump or a bump right next to the anus hole(its external), and it looks pinkish, like a large whart, Its about the size of a pea, and it literall feels like there is a pea in this lump. I can move it it around a little. It dosn't hurt, sometimes there is a little blood. I noticed it about 3 weeks ago, and it doesnt seem to be getting smaller.