From what i have experienced and read in books and from online chats and message boards this is what i have found to be the general progression of bereavement:
Stages of Bereavement
Here are the stages one generally goes through. Please keep in mind it is not a linear process. One day/hour/month you feel okay/better and then wham. The stages can be mixed together and some may not happen. The main thing to keep in mind is that even though it is remarkably painful it is a natural process that we can heal from. The more we loved our pet the more intense the stages.