Hello, Thank you for asking your question at health care magic. The symptoms oof lower left abdominal pain along with diarrhea especially with previous history of diverticulitis raises the concern for recurring diverticulitis especially if the past episode was managed medically with antibiotics. Diverticulitisis is infection of Diverticulum which is a small outpouching from the colon.First episodes of diverticulitis are treated just with antibiotics, but repeated episodes need surgery. Diverticulitisis definitely need to be ruled out first before undergoing a colonoscopy or else it can result in perforated bowel. Other possibilities include inflammatory bowel disease, ovarian cause of pain like complicated cyst/ torsion (I understand that you had undergone hysterectomy before,So I would like to know if ovaries were also removed then), urinary tract infections,stones etc. All these conditions need medical attention and appropriate care without which can lead to complications. I recommend that you go the nearest emergency room. Hope I was able to answer your question. Please feel free to address any more concerns. Regards, Dr.Lekshmi