Hi I Feel Down A Slid Very Fast And Cort

hi i feel down a slid very fast and cort my tailbone on the corner eggeds which was wood. i couldnt sit down poroply for days and couldnt lye down flat on my back when sleep for 2 weeks. it is now fine but still hurts when sat down for a long period of time and if any one was to tough it, and there us a indent and dark around it. is this any thing to worry about and to see a doctor about?