YUMA, Ariz. (KYMA)- Many people have had a urinary tract infection, but when does it become something more serious? Mitzy Pacheco, nurse practitioner with Exceptional Community Hospital in Yuma says it can become more serious than people think. "A UTI usually causes burning with urination, urgency, and discomfort, but if the infection spreads to the kidneys, it can become much more serious," The post Medical Minutes: Understand UTI’s appeared fi…