So I get this very bad pain on my cycle . My tailbone area hurts very bad. Even when I sit. If I stand too long if I walk too fast. I've been to the doctor and they made me take this test in this big machine and I have yet to get results. I've took some pain medicine but it will not stop! When I try to relax it hurts even worse so I have to stay tense all day. Anyone know what it could be? Why?