PeaAche Welcome. I am sorry about your two losses, followed by Hyperemesis. There is lots of support on here. I'll add that small, salty Yorkshire Puddings tip. I am glad that Cyzline is helping at least part of the time. If things get worse, don't hesitate to ask for something stronger.Here is my normal spiel, in case you haven't seen it on the thread. Most sufferers find that they improve a lot at some point between weeks 14 and 20, or sometimes later. Even those who are unlucky enough to suffer throughout generally are not as ill later on as they are in the first part. A good anti acid can make a surprising difference to the sickness. Kesostix are worth buying online or from a chemists, as while they aren't they best test of dehydration, hospitals take them seriously. When reporting on the vomiting to doctors, remember to emphasize the number of heaves in each vomiting session, as doctors tend to count these as 'vomits' and this can lead to their underestimating the severity of your symptoms. Besides drinking through a straw, here are some drinks that have helped others: full sugar flat coke (if you don't find it too acid), ice lollies, the juice of tinned fruit, Lucozade, apple juice, Ribina, Dr Pepper, soda water, Elderflower water, tonic water, ice cubes, Iron Bru, lemonade, lemon squash, orange squash, orange juice (if not too acid), fizzy orange, 7Up, isotonic drinks, sips of chocolate milkshake (maybe soya), fizzy water, apple juice, Robinson's fruit drinks, Rubicon sparkling mango drink , raspberry Lucozade sport and frozen ice cubes of flat Lucozade sport. Also, pink lemonade , cloudy lemonade and Sprite. Foods of a sort include tinned fruit, cuppa soup, nibbles of crisps and chips, cheap ice cream, Scotch pancakes, bagels and biscuits, potato smileys, minature salty Yorkshire Puddings and slices of melon and mango. Protein drinks have also been mentioned.
kalidasa That is happy news. 
Great that you are putting some weight back on, too.
Hello47 Congratulations on twins.Exciting news when you recover from the shock of it. I think that some doctor's surgeries can offer help to mothers of twins in training nursery nurses. It might be worth enquiring. Also, as kalidasa says, those expecting twins often recover from Hyperemesis earlier than those expecting singletons, I suppose because if it was a singleton pregnancy, they would never have got such severe symptoms. Don't worry about not posting regularly. Many can't bear to look at screens.
Melleebacca That's a good tip about those Hydralite ice cubes with salts. I wonder if they are available over here?
Derbee Sorry about sciatica. It might take some time to get a physio appointment, but might it be possible to see an Osteopath or a Chiropractor? While expensive, they can usually do away with sciatica in one or two treatments; it is amazing.
HopefulJ2018 That sounds bad. I am glad you have got the ketones down again.
FateHasRedesignedMost Might the coldness be down to low blood pressure? Most unpleasant when having to suck on ice lollies, anyway.
I hope everyone is coping...