I occasionally will wake up out of a sound sleep with a pain that continues to grow in intensity in and around my buttocks area. I usually get out of bed if the pain gets too intense and try to walk it off. It usually dissipates in about 10 minutes and I go right back to sleep. I think it's muscle pain but I can't be sure. It only happens about once every other month on average. Has anyone else every experienced this? It's not a severe problem but it certainly is annoying.