Getting ready for a clinic

I did not want to ride hard this evening... I wanted save myself and Blu for the work tomorrow. I think something is going on in his stifle. His walk and canter were pretty good but his trot looked really rough to begin with. He is stepping wide in his right hind. hmmm...The Veterinarian will be out on Monday so hopefully he will have time to take a look. We will have to see... He is such a sweet boy. He tries very hard and I think he is trying to tell us enough is enough fix it already. I hope I am wrong.