Did my usual urine sample at mw appointment today, but when I looked at it (not sure why I did, never have before), there were, umm... bits at the bottom. Just teeny bits, mostly white but one pinkish (sorry, I know, TMI). Is that normal? Obviously I'm not in the habit of peeing in containers, and as I said I've never really looked at it before today. They didn't test it there and then; should I be worried that it's an infection or something? Or is it just tissue/discharge/other normal bodily unpleasantness?