I'm so sorry to hear what you and all others who experienced this condition have and are going through. I'm equally sad that the NHS treats you all so poorly.
I never suffered morning sickness at all, but please don't hate me for this...made up for it with multi-day labor which was awful, but DD and I are okay now. However, I have had some friends in the US who had this, and nobody has ever been treated this poorly. Even people with no health insurance are treated if they show up at the emergency room, and don't believe all the crap you see on TV about the US healthcare..it isn't perfect either, but you would not be going through this. This is just awful.
I've never heard so many sad stores and I'm in tears that this is happening. Please do whatever is necessary to get the care you deserve. I'm no medical professional, but this CAN harm the fetus. Do not just listen to people who say it does no harm to the fetus...It can and sometimes it does. (My sister is an ob/gyn and she KNOWS this.) Go on the web and search websites and educate yourself. It's rare, but in extreme cases, being severly dehydrated CAN do harm.
Things will probably be okay, but don't suffer in silence. Don't listen to the NHS propaganda....arm yourself with knowledge and tell them what you want them to do for you. There's an entire other world of healthcare outside the NHS and much information is available on the web (some good...some not good), but it's available to you. Hope you can feel well long enough to get your confidence up and 'go get your care." Go to A&E and throw-up constantly if it's necessary.
I can't believe the ull*it comments that it doesn't cause harm. The NHS wants you to go away cause it costs money to treat you, so better if you 'obey' and just suffer in silence. NOT!
Demand you get a test to make sure you're not too dehydrated ...it they can't do a urine sample, well then you ARE dehydrated.
If this was the usual morning sickness, you wouldn't be this bad off. That...in the infamous words of the NHS..DOES sort itself, but severe illness often does not. Don't jeopardize your health and the health of your baby. Be strong and demand help.
Know I'm thinking of you and hope all is better soon. BTW, I've always gotten good treatment from my GP, but I usually tell her what I expect the outcome to be. At first she thought I was agressive....told me so..but now comments she enjoys treating me...as we say where I'm from...."You Go Girl." Good luck and hope better soon.