Crohn’s
disease, diverticulitis, infection in
kidney,
kidney stones (possibly missed on ultrasound), constipation, ovary involvement in women (cysts, hemorrhage, tumor, torsion-all ruled out in your case), ectopic pregnancy in women (ruled out), mesentry (a thin tissue that carries the blood, nerves and lymphatics for the intestine) involvement with low blood supply, enlarged lymphnodes, and an abscess in rectus abdominis muscle or psoas muscle (these two are unlikely is there is no localized p