Suggest Treatment For Severe Pain On The Leg And Stomach While Suffering From Endometriosis

My daughter who is 27 has had chronic pain for two years. She has endometriosis and had a large fibroid removed from her womb. She suffered severe pain following a cervical biopsy which showed CIN 3. She has had a Lletz procedure January 2010 but has severe pain on her left side, in her coccyx and spreding down her left leg. No pain medication seems to help. She has seen her gynaecologist who has ruled out that the casue is endometrisos as she has had the coil fitted and is on a consinuous pill. She has no social life because of the pain. Any help would be greatly appreciated. Thank you