I had severe Hyperemesis for 4 pregnancies.I lost 2 stone in 2 weeks with first,and couldn't get out of bed,luckily my Mum looked after me.
The second pregnancy I went into hospital for 3 days,had a drip and felt fantastic,once the dehydration was treated,the sickness was much easier to bear.
The 3rd pregnancy never developed past 12 weeks,but I was just as ill,but managed to cope at home.
The fourth pregnancy was the same,but I just kept sipping tiny bits of water,and drank litle sips of my mums home-made chicken soup(yes,she has jewish origins!!),and that kept me going.
But i can sympathise.I was so depressed during those weeks,I felt so ill I couldn't enjoy being pregnant until it started to ease up.I used to cry all the time.
I have 3 lovely DC's and would do it all again in an instant if I could.