Your tailbone might have started hurting after something as simple as sitting on a hard bench or other uncomfortable surface for a long period of time. Falls and other traumas can bruise, dislocate, or break your tailbone.
Pain from an injured tailbone can range from mild to intense. The pain can get worse when you sit down or stand up from a chair, or when you lean back while sitting. You can also feel soreness when you use the bathroom. Women may feel discomfort in that area during their period. Sometimes the pain can shoot all the way down your legs. Standing or walking should relieve the pressure on your tailbone and ease discomfort.
Treatments include mobilisation techniques and exercises to strengthen the muscles that support your tailbone. You can also try a technique called coccygeal manipulation.