Moved fast and bumped top of head on hard wood shelf 15 hrs ago small knot hurt after injury feels sore and tingly on top of head should i be concern?

Head trauma: Hello there, if you simply bumped your head then you should not be alarmed. However, if you feel this was a traumatic injury and you blacked out, passed out, feel like you were seeing stars or you have a severe headache you should seek emergency medical assistance immediately. It is possible that you have sustained a concussion but it is not possible to diagnose without seeing a doctor for help.