Suggest Treatment For Endometriosis Leading To Pelvic Pain

Hi,I had a partial hysterectomy about 7 yrs. ago.I continued to have the same problems. I went to another doc. and they diagnosed me with endometriosis. I then had a full hysterectomy about 3yrs. after the 1st. However, I am continuing to have pelvic pain. It usuallu occurs cyclically., as if I were on my period. I also have terrible bowel pain and nobody seems ,#1 to be interested and #2 totry and help me. What should I do about this?