Boot Bruises

Greetings all, I am new to the forum, this is my first post. Today after coming in off the slopes I noticed my shins were bruised in the same spot on both legs. Normally I wouldnt think anything of it, but these were very large and very discolored. Since I did not take any spills during the day I figured my boots must be the problem. I have been skiing for ten years (3 years with these particular boots) and had never had this problem! I noticed similar bruises earlier in the season as well. What am I all