I was at a horse show on Sunday and the footing there was very thick, deep, wet sand. Ever since then, my horse has had a limp. Its mainly at the walk. At first I thought it was just a rock stuck in her hoof and after I picked her feet she was fine. But when she turns she almost falls. I told my trainer all of this and she thought maybe that she had bruised it at the show on Sunday. I used her again on Tuesday and she was good. And I have a jumping show tomorrow. ( from 1-3) and it is very important. What should I do? How long does this take to heal? Should I give her bute? Has anyone had experiences with this?