Suggest Treatment For Tailbone Pain

hi my tailbone started hurting when i sit down all at once it was fine and the next time it was there a sharp pain and that was two months ago and the pain is still the iv been two the doctor and she put me on celebrex but its still no better i fell a year ago down the stairs and had a big lump and it took it a LONG TIME TO LEAVE WILL you can still feel it abit on the side of my but cheek i am scared my dad has colon cancer i hah a scope done last nov every thing was good