I had pain in my coccyx about 2 years ago. I had not injured myself when it started hurting. I could not sit for very long. I went to the Doctor and she gave me medication (I can't remember what it was) but it helped and the pain went away.
Then a year later I had blood in my stool and had a colonoscopy done and they found 2 polyps which they removed. About 5 months after that the pain in my coccyx returned with no injuries. I went back to the doctor and she gave me the same medication which did not help this time. I had an X-ray done and also a bone scan and they found nothing. I started walking and it seems to be helping.....now I have a pain in my hip!!!