For the past two days or so, I've had a urinary tract infection. I constantly have the urge to pee but most of the time nothing or very little comes out. This isn't what bothers me, though. Yesterday I noticed a tissue-like object that had came out when I urinated. It's very small, and reddish-brown in color. There was no blood, just the tissue. It also happened again this morning. What could it be? And does the UTI have anything to do with it?