Ans: The pain in lower left side of abdomen of female or aching stomach may be caused by gas, indigestion, diarrhoea, or cancer, or it may be caused by menstrual cramps, endometriosis, or pelvic inflammatory disorder. Kidney stones can cause severe pain that comes in waves. Trauma to the body wall, hernias, and shingles will also induce discomfort in the left lower quadrant.