Replying to Skiing hurts

Alright so I've got 3 times this week, after a couple of runs on the bunny hill(Cuz Terrain Park to advanced) my legs started to hurt I thought it was nothing but later to my last couple of runs it kinda hurt like a bitch. When I took off my boots both my shins had a bigish looking bruise, this has never happened to me at all this was the first time. All 3 days the boot kept on bruising my shins, I've had this boot for 2 years this didn't happen this year would you guys suggest I go to the shops and see if its the boot I mean it doesn't feel tight cause I usually have it tight when I'm riding so my feet don't move to much.

Has this happen to anyone, so far I kinda dislike going to the terrain parks cause jumping makes it feel worse.