Tired shins

I wonder if it's my new shoes causing my shin trouble. No trouble yesterday, but soreness and tenderness today. So I cut my 6 mile run to 4 and called it good enough, with a 1 mile walk on the end.  I iced the shins when I got home and soaked for 10 minutes in a very cold bath.  My legs felt very good about an hour later.
Wow. I forgot what it was like to sweat this much while running. And I thought I drank a lot of water before.