It's not a good sign is it?
I fell of my bike last week (drunkenly riding through Amsterdam whilst in a bad mood wasnt a good idea) and seemingly landed with my shin/knee onto the bike, bending one of the bars. The top of my shin has gradually got sorer every day since then (last Thursday) and the bruise is just getting bigger and bigger, the sorest part is an early-bruise yellow, and the rest of the front of my shin, from ankle to knee, is going a greeny, blue/purple colour, and my actual ankle is going an odd dark colour, but isn't tender at all.
DiS doctors help me! I'm starting to get a bit worried, but not worried enough to seek any proper medical help.