Hello Fairy,
Go to a chemist today and get some Nytol one-a-night.
I found them invaluable at this stage (whether it is for non-stop crying, feeling ill from sleep deprived headache or lack of food, racing-mind that won't switch off etc). I was concerned they would knock me out and I wouldn't be awake for the dcs if they needed me but in fact it just relaxes you enough to get you to sleep.
Get some non-creamy soup that you can heat and drink from a mug. It'll keep you ticking over and your poor body can deal with it.
A few other things I thought of:
You probably have little else on your mind and advice, whilst good, brings in another body blow of reality - and a view of the current dystopia further down the line. It isn't nice but it is normal to feel that way.
You'll be experiencing all sorts of conflicting feelings rolling on top of one another without a moment to catch breath - whilst your dds are expecting cool consistency. Normal too.
Re telling dcs: Initially we told ours that "daddy was living near work for a bit as he was busy" (didn't say busy doing what - in fact I didn't know at this point!) as a holding statement. I didn't feel ready to say "Mummy and Daddy don't love each other etc" at that point as it would have been a lie for me. As it was, a few weeks down the line, revelations aplenty etc and time for me to mentally adjust - I was then able to say "Mummy and Daddy don't get along any more" with veracity.
It's weird isn't it.. on the one hand it is the most intensely personal event and isolating because of it - on the other there's a thousand before you and a thousand after - and as another poster said - the phrases, lies and duplicity are the same time and again. Difficult to know which is worse.
Anything I can do or say please ask fairy. So many helped me here.
Must go as exP due any minute and I wish to keep my internet use private!