Thanks everyone for welcoming me and for your kind reassurances. 
Today did not turn out to be a better day. In fact, it was rather crappy. I have been mega-sick and unable to tolerate anything, even my fall-back foods of which I can usually manage a small mouthful or two. I've felt really emotional all day and needed to see my lovely old GP for another line for work and some more cyclizine. When he called my name over the intercom at the surgery, I started sobbing, huge great big gulping sobs! He was very kind though, as always. Today, he tried to explain hyperemesis to me as a 'reverse menopause'. I think I caught the gist of what he was trying to say!
DH went out for Christmas lunch with his colleagues between the nursery and school pick-ups. He really deserved it for all he's done recently but I couldn't stop myself nipping at him later. I miss my life and all the things I would have normally been doing with friends etc had things been different. At Christmas, I cook dinner for DH, DC and MIL and in the evening, we drive to my parents house and my brothers and grandparents are there. I've never not done it but this year, DH and the DC will be going alone. I'm so sad that I'm not going to see my Dad on Christmas Day. This has changed everything.
Room would your hospital allow you to come in for IV fluids as a day patient and return home in the evening? Just a thought - I really wanted to go home to the DC and the doctor at the hospital eventually suggested this as a plan for me as they were not happy to discharge me at that point. It's still not ideal, I know, but I think that it's easier for the DC if they feel like they have you around a little bit at home, rather than only seeing you in a hospital environment for a few days. It does mean that you have to have the cannula reinserted each day though (ouch!).
Reebok I had a brief affair with ice lollies a few days ago and hated having to share them with the DC! I tried saying that they were 'mummy's special ice lollies to make her feel better' but they were all staring at me, salivating!
Oh please let tomorrow be better. I have to get up and out for a nursery nativity in the morning. I'm looking forward to seeing DS perform but will be trying to remain inconspicuous, whilst no doubt howling the place down (emotional wreck!), in an attempt to avoid the nosy-parker mums who have been quizzing DH over my whereabouts for the past six weeks!
Hope you all have a good day.