Crohn’s disease, diverticulitis, infection in kidney, kidney stones, constipation, ovary involvement in women (PCOS), ectopic pregnancy in women, mesentry (a thin tissue that carries the blood, nerves
and lymphatics for the intestine) involvement,
and an abscess in rectus abdominis muscle or psoas muscle can all cause lower right abdomen pain. Since you had a kidney stone earlier, this should be looked into.