Thanks for the replies guys. I was a little worried but he ended up peeing right before we went to bed. He slept a lot yesterday but he wasn't woozy. When he was awake he would walk around or roll onto his back for me to pet him. Also, i didn't check his temperature but he did sleep curled up in his blankie all night, so i'm sure he was warm. I'm relieved now that he is getting better.
Oh, but about how long does the swelling take to go down, the nurse told us that he would be slightly swollen but it should never get any bigger than it was before, which it isn't but he is still slightly swollen. ?