I can't believe I am reading this. I can feel your pain. Mine has nothing to do with sciatica. Mine is simply SEVERE pain prior to sex, even thinking about it, as I am starting to get aroused. I mean horrible cramping pain. It feels like someone is jack hammering my insides. I have talked to one of the best gynecologists in my County. She never heard of this. I have had 3 endoscopy's and 4 colonoscopy's in the past 6 ears for other things and nothing has shown up. I have had ultra sounds, CT scans, etc. NOTHING! I feel like I am going to be alone the rest of my life, as I am divorced now and feel I can't date because of this.