What would cause lower right quadrant abdominal pain other than gallbladder stones?

Any number of: Conditions, such as appendicitis, kidney stones, ileitis, cecal diverticulitis, colon cancer, foreign body perforation, meckel's diverticulitis, ovarian cyst rupture, pelvic infection, ectopic pregnancy, ovarian cancer, lymphadenitis, etc. And these are just the most common conditions. You need a doctor to figure it out for you.