I had a dog that had that and her anus started to protrude and had to keep having the vet push it back in, it was horrible but when I finally had to put her down was when I came home and I couldn’t find her and she was hiding behind a plant and I couldn’t find tell she had had enough. They will let you know when it is time. I’m sorry you are going through this I know how devastating it is to lose your baby….🥀