Hello, Lower left side pain and popping sound is commonly indicative of ovarian torsion. It can occur while doing strenuous exercises. It occurs due to the rotation of the ovary and portion of the fallopian tube at its pedicle to such a degree as to block the ovarian artery and vein. It is an emergency and requires urgent surgical intervention to prevent ovarian necrosis. Ruptured ovarian cyst can also cause similar symptoms. They go away on its own without any treatment. It causes sudden sharp pain on the side on which ovary has a cyst. It may need urgent medical treatment. Other medical conditions that can cause similar symptoms are incarcerated hernia and needs immediate medical attention to treat this illness. Kidney stones symptoms also include a sharp pain in lower abdomen or on one side of their back. You are advised to get clinically examined by a gynecologist, get required tests, investigations, imaging tests done. Your treatment will depend on the pathology diagnosed & the severity of the symptoms. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician