My rabbit, Toby, is walking with his rear end pointed up on his tip toes. Friday afternoon my brother went to get up from his office chair and the rabbit was directly underneath him and put pressure on his back. When i touch just in front of his knee on his belly he flinches. He also is barely drinking. Filled his bowl woth water this morning when i woke up and its less then half empty at 9:30pm. My vet does not have an emergency line and they are closed anything i can do in the mean time?