Ugh, Chester...

So today, I go get Chester and surprise! His left hind fetlock is very swollen and feels kinda like jelly. He's got a kinda crack/split on his hoof. I don't know if I should call the vet yet or not..Dian's gonna look at it in the morning, so the vet'll get called very very early if he needs to come out.
On the plus side, his weightbuilder is working nicely. He looks great and I'm going to measure this weekend because I think he's had an "up" spurt as well as "out". Will be working on trailer loading as well this weekend, will have to update again on Monday.