My middle finger got smashed between the handle bar of my bike and the handle bar of an other speeding vehicle in opposite direction. I don't see any fracture. I am able to move my finger but a bit pain in joint and it's swollen and upper part of finger turned to light purple. Is there anything major I am not aware about? And could you suggest some basic home treatment. I wouldn't like to go to doctor if it's really a minor temporary wound.