Moose,
Sorry to hear about the accident. That must have been pretty scary, and painful, for the both of you. Sometimes, once the initial shock of the accident has worn off, people can be kind of more upset. See, your body naturally responds to shock..think of a big fat cottonball surrounding you right afterwards. Everything is kind of muffled. Then, that cottonball goes away, and you are left with just your raw feelings about the accident, the 'what ifs', the injuries.

Take some time to baby yourself. Eat better than ever, take lots and lots of naps, get to bed at a good time, and go slow. Give your mind and body a chance to fully recover (and that might take weeks). Only do those things you 'have' to do...get up, go to school, work, take care of your pets. Try to avoid all the stressful things that you can. If that means sitting around listening to music, reading a book, watching TV, do it! Listen to what your body is telling you.

Take care of yourself.