"A kidney stone attack has classic symptoms: the most agonizing pain in the lower back just below the ribs spreading around to the front of the abdomen and often extending into the groin area. The pain may come in waves as the stone tries to move through the tube between the kidney and the bladder. Often there is nausea, fever and chills, and vomiting. The abdomen or lower back may be painful to touch."
Couldn't have said it better myself.