Frequent urinary tract infections. The urinary tract is a delicate system of your body, but it is not so easy to get any infections there unless you have too dirty hands. And this symptom is very widespread, especially among women, who suffer from stones in kidneys. If you have any infections with a large period of time between them, it is not too bad and suspicious. But in case those infections are too often, you need to check out your kidneys. Attend health care provider to it correctly.