My 69lb pitbull terrier was neutered around 11 hours ago. He's been sluggish but that's expected. What isn't is the swelling and bleeding from the incision. We're taking him to the vet again in the morning. He doesn't seem to have the signs of any real internal bleeding but I'm watching for gum color changes and respiration changes. His temp seems normal for now. Anything else I should watch for?