What Causes Pain In Left Abdomen Radiating To Leg Plus Joint Noise?

Hello, my mother In law has been having a sharp pain by her lower left side of her abdomen. She says that her pain can change to the lower, middle of her abdomen to her left leg. She had also said that she felt a poping like pain and sound too. She currently has diabetes and has been under a lot of stress. Can it be something serious? Or does it have to do with her Diabetes?