I have a wonderful gelding Applousas. I noticed this evening that he has a swollen knee and a quarter size bulge on the knee. I have called the vet but no return call yet. Do I need to call the emergency vet or wait until tomorrow and what does this sound like. He is only 9 never been used for work (ex: rodeo, cutting, nothing!!) There is no cuts on him so I rule out getting caught in the fence. I also dont have holes in the ground so no twisting from that at least. Any ideas. Thanks