I have been experiencing pain in my sacral area for almost a year. It feels like my tail bone is broken and it really hurt when getting up from a seated position. I did not know that a person could get arthritis in the sacral joints and the pain can be relieved with certain types of stretching exercises. Unfortunately it turn out to be an abscess which burst causing peritonitis and sepsis. Blood work showed an elevated white blood cell count of 21k. I would monitor that closely. Hope this helps