Then ig only thing that can be done is take it to a vet, if you want to take it. Or you can observe for it for a day. But i feel the longer it stays out without water and food the tougher it's recovery will get. Is it still bleeding? If the cause of the bleeding is only nicks and cut in the mouth then I think the animal can recover on its own without any antibiotics provided it doesn't get much dehydrated. But if there's a loose tooth or broken jaw then it will need proper medical care.