Not so happy 4th of July... *UPDATE*

[Vermontcat]

Good luck at the doctor's.
When you find out whether it is broken or not, ask the doctor if he recommends you doing the horse show or not.
I hope you feel better soon, in the meantime ice and elevation will help keep the swelling down.

[Vela]

You ought to be able to go to the horse show just fine, with a little help with banding and tacking up etc. I once had a mustang mare I was training who dumped me off and broke my pinky finger and we still went on an all day ride in the mountains, didn't get it fixed until later. So I'm sure you'd be fine to go to the show even if it is broken.