I have chronic pain in tailbone, left buttock, left sacroiliac and extreme intermittent burning in left perineum. For years, I experienced it as sitting pain only. Then it progressed to pain when laying down. I get relief just before sleeping by laying prone for a short time (I always was a tummy sleeper when young but can’t manage it for too long anymore without a firm pillow underneath my hips and tummy).This relaxes my muscles enough that I can then sleep comfortably on my right side all night. The Nevro trial helped a lot and I’m now awaiting permanent placement. Hope I’ve covered it! Gayle