I have this smooth, tender lump on my left butt cheek about the size of a marble, somewhere close to my anus. I ve had it for two years now, but I thought I d ignore it since it doesn t hurt anyway. I just started to notice it again, but it still doesn t hurt. I haven t seen it, I can only feel it. I just wanna know what it is because it bothers me (not physically, but more mentally) since I have no idea what the lump is; and if I should go see a physician about it. Thanks for any help you can give me