So I've had a fistula above my b hole for a LONG time now it bleeds a lil after a bm but other than that not to bothersome well over the last few days I've notice a small hard ball like knot coming up beside the fistula it's not very painful just a lil uncomfortable. What is it?!?!?! Small abscess maybe I've had one years ago that was 6x's as big as this one if this is what this is what do u guys think?