Hello, I recently noticed some white flakes in my urine. I know it s odd, but sometimes I am lazy to go to the bathroom at night, and I urinate into plastic water bottles, and I noticed that when I urinated it burned, and now I see white particles that I know are not typical semen. Now, I seem to have burning whenever I use the bathroom in the morning, and not so much the rest of the day, and whenever I actually bother to examine my urine in a bottle, it always seems to have these white flakes now. What could this be? a UTI? Anything else?