James
Honestly? Just keep going. Do the things you would ordinarily do. And for a long time, it's going to feel like you don't give a damn about any of it. You've had a lot happen in a short amount of time, though, and it's completely understandable to shut down because of it.
I'm also going to suggest coming down to the clinic even though I know you'll probably rant something about 'forced cheerfulness'.