The following conditions often cause lower right abdominal pain 1  : Appendicitis. 2  Cancer. 3  Cholecystitis (gallbladder inflammation). 4  Diverticulitis. 5  Problems with the cervix, such as a cervical infection, inflamed cervix or growths on the cervix. 6  Endometriosis. 7  Inguinal hernia. 8  Injury.