from your query, it difficult to come to diagnosis. you must give detailed history,investigation you done and treatment you get till now. i think you are suffering fromc coccydynia.A number of different conditions can cause pain in the general area of the coccyx, but not all involve the coccyx and the muscles attached to it. The first task of diagnosis is to determine whether the pain is related to the coccyx. Physical examination, high resolution x-rays and MRI scans can rule out various causes unrelated to the coccyx. you must do the investigation and consult you physician/orthopaedic surgeon for proper diagnosis and treatment according.since sitting on the affected area may aggravate the condition, a cushion with a cutout at the back under the coccyx is recommended. If there is tailbone pain with bowel movements, then stool softeners and increased fiber in the diet may help. For prolonged cases, anti-inflammatory medications such as NSAIDS or pain-relieving drugs may be prescribed.The use of anti-depressants such as amitriptyline may help alleviate constant pain. sometimes even just a single local nerve block injection at the ganglion impar can give 100% relief of coccydynia when performed under fluoroscopic guidance. if the pain is caused by a malignment of the coccyx, manipulation by a chiropractor, osteopathic physician/ physical therapist can offer relief