My tailbone hurts, i don't remember anything that could of possibly hurt it. when i touch it with my finger i can feel it moving, what's wrong?

Coccydynia: Tailbone pain can occur with or without injury. Only real concern is to exclude a sacral tumor (extremely rare). If bowel/bladder habits normal, probably ok. Treatment included nsaid's, and a sitting pillow. Not a doughnut, but a foam wedge with triangle cutout. This keeps you sitting leaning forward without pressure on the coccyx. If persistent, removal is rarely needed but successful.