I have had this pain spot at end of spine/top of ass crack/tail bone area for a while. I have a high pain tolerance, but this is bothering me too much. It registers in my mind as feeling like a tight spot or nub, but there does not seem to be an actual visible injury to that area. I cannot walk, sit, lay down, or even shift a little without a shooting and stabbing pain there. Even when I find a semi-comfortable position where the pain is at least bearable, there is still a stabbing throbbing pain. It even woke me up from a deep sleep