Or if it's in the "crack" area it could be an abcess or soon to be fistula....external hemmies stick out of your anus, internal ones don't.
Check out this link, the first set of pic shows both kinds of hemmies (internal and external) the pic below that shows perianal crohn's skin tags (only related to crohn's not UC) doesn't hurt to look, afterall tons of people seem to get misDX between UC and CD....you can also google pics of "anal abcesses" and anal fistulas to see if any of those pics resemble what you have.
Here's the link I was referring to...
bee propolis caps 500mg one cap twice/day
omegas 369 caps one cap twice/day
probiotics 10 billion cfu once/day
vitamins C-calcium ascorbate (easy on the gut) and vitamin A each once/day
Prodiem fibre supplement one cap before bed
I've also altered my diet (no junky stuff at all, processed, fast-foods, refined sugars, ect) and exercise regularly.
I went from 30+ bloody BM's/day with lots of lower back pain to an average of 5/day no bleeding no back pain and completely formed stools, still have severe urgency issues.
~~~~~~~~My bum is broken....there's a big crack down the middle of it! LOL :)~~~~~~~~