For the past several years, a couple of times a year I pass a light brown mucus with my BM. No other symptoms notes. Then about two months ago I had an episode of diarrhea, stomach cramps and passage of a blood tinged mucus. I thought it was due to some bacteria. Well, now I have just had a couple episodes of the light brown mucus but upon close examination realized that it is blood tinged. Not really any other symptoms though. Maybe a bit more gassy. What do you think this is??