Suggest Treatment For Endometriosis

I am being treated for endometriosis right now but I am still having pain and I have been to an OBGYN and a GI specialist and they can't find anything else that it could be. This pain is the same as before I had my Laparoscopy to have the endo removed. I am living in constant pain anywhere from a dull ache to full on sharp, stabbing, pains. I was wondering if an outside source could help me. I have had this pain for going on 8 years now. I am at my whits end because none of the doctors are really helping me anymore. The last option is pain management and that is not something I want to do. I just want to know whats going on in my body.