Dislocation of the tail bone causes slight pain while sitting and in other postures where there is pressure on the coccyx. Correction is easy if done immediately, but it is difficult if done after a period of time, specially after such a long time of 33 years. If you have persistent and unmanageable pain, despite taking painkillers, then you may consult an orthopaedic surgeon.
I would suggest you to get yourself evaluated by a specialist in tail bone injuries. You may have to travel but it will be worth your while.
For successful treatment complete evaluation for the range of motion is essential.