I am having left abdominal pain, left pelvic pain, and left back pain . I had a hysterectomy 5 yrs ago due to endometriosis . I've had recently several studies which are negative . They checked for kidney stones, ct if abdomen and pelvis for answers..... Negative . Colonoscopy , negative . Bloodwork , negative . They said its probably ibs . But I don't have bloating , diarrhea, constipation,and its only left side .... Help !!!!