Many kidney stones don't move and are too small to cause any symptoms. However, if a kidney stone causes a blockage or moves into your ureter, you may have severe pain on one or both sides of your back, get sudden spasms of excruciating pain-this usually starts in the back below your ribs, before radiating around your abdomen and sometimes to your groin and genitals, have bloody or cloudy urine, feel sick or vomit, feel a frequent urge to urinate or a burning sensation during urination or get fever and chills. You can also have these symptoms if you have a urinary tract infection (UTI) or cystitis. If you have one or more of these symptoms you should ask your doctor for advice. If you're pregnant and have any symptoms of kidney stones see your doctor straight away.
Attribution: BUPA