Tailbone pains

My tailbone has been giving me problems for about a year now. Whenever I sit for more than an hour or so, I have a hard time getting up. Or if I lay a certain way there is a problem. When I go to by beautician and have to sit for a long period of time, I hurt so bad. Last June I had ex-rays and the doctor could not find anything. I know there is something wrong. I thought that this would be cleared up now, but it’s getting worse. I don’t know what to do. It’s affecting my every day life.