One of the most common urinary problems in women is urinary tract infection (UTI), which is also one of the most common bacterial infections. It’s considered a major health risk. A urinary tract infection (UTI) is an illness that affects any region of your urinary system. It usually begins with a vaginal infection. Though the illness mostly affects the lower urinary system, the bladder, and the urethra, it can also damage the kidneys and ureters.