Hello... before bringing this to my regular doctor I wanted to check here. Twice now, in as many days, I ve passed this white, disintegrated-cotton-looking substance along with my stool. (It s not IN the actual stool itself, but passes with it) Looks like mucus or pus maybe? FYI, I had bariatric surgery about 9 months ago. (Though that may have nothing to do with it). No pain whatsoever, and no gastric discomfort/nausea or anything of that kind.