So about 4 years ago, I fell on my tail bone while rollerblading. Went to the my doc and he said that it'll go away with time. It hasn't. 4 years now and nothing has improved. I have two kinds of pain. A sharp one, that usually happens when I'm mensturating or constipated and a dull one, usually when I'm sitting on the floor or on a chair. In addition I that, I have back pain (mostly lower) when I'm standing for too long or when I lift something heavy. I have no idea what is wrong and I have done all kinds of tests, from x-rays to MRI. Almost every possible test. And nothing! I just wanna know what is causing this pain? And what I can do about it? I try not to take medication unless I absolutely need it.