question: I m having severe pain in lower abdomen.. have had this on and off for more than a year. it s transient; lasts for about an hour every few days and then goes away. started in lower right and radiates to middle. I m 59 years old; female. Appendix, ovaries and uterus removed. Colonoscopy and ultrasound were negative. Happens whether i am seated or standing, full or fasting. One doctor thinks it may be a bowel twist... would that come and go like this?