I was sledding with my family and somehow the sled slipped out from under my bottom and I landed really hard?

I landed on my bottom really hard on a hard hill of snow. It hurt so bad and I felt like I was going to be sick. Now my tailbone is killing me. If I stand up or sit down it is awful. I am taking three ibupofens every six hours. My question is should I go to the doctors? We do not have any insurance and everything I have read says that there is no difference between a bruise or a fracture as far as what they do and the pain. Any suggestions?