I think at times like this, when you've just gotten hit hard, the best thing you can do is nothing! Just be still. You need to get over the shock, the frustration, and the hopeless feeling. Give it a little time, while you take care of yourself, and your D. As you take care of yourself, your strength will come back, so that you can start to see your path again.
You won't be alone while you are on this board! In time, you'll build up quite a virtual support system. Read some other threads. Post to people who interest you, or have similar situations, even it it is just to say "hi". You don't have to have the answers to offer a hug! Just look at me!