Oh Willow- I am sad to hear you so down. Is there anyone that can mind DD and DS for even a few hours so you can get some sleep? What about your DH? I don't think there is any one answer but perhaps the residential stay will at least help to rule out possible causes and develop strategies. I know my words don't mean much, but it will get better - it has to. Don't worry about us, thats what we are here for. Heaven knows I've vented to you all more than once.
Trish - sorry to hear K has reflux. Is it normal to come on so suddenly? If it came on suddenly can it go just as quickly?

Hugs to everyone