Yesterday for dinner I had roast beef and last night while "wiping" after urinating I noticed a brown substance resembling the roast beef on the toilet paper. Again today the same thing happened. It appears to be undigested roastbeef but my concern is that I have not had a bowel movement or even the urge to, it just comes out when wiping. Could it be the undigested food and why is it just coming out or something else? I apoligize for the unpleasant graphic detail of my question, I just don't know how else to describe my situation. Thank you so much for any help.