I Fell Onto The Gym Floor Contacting The Head Of

I fell onto the gym floor contacting the head of my tibia with the flooring causing a good sized knot to form. There is no pain involved with activity but the rest of my lower leg has experienced discoloration and slight swelling. It has been 8 days now still with no pain particularly but still with the goose egg on my shin. Should it be seen by a physician even though there is little pain.