Lady are you keeping any fluids down at all? If not, you need to go to your gp/epu with a urine sample in case your are dehydrated. They might want to rehydrate you via IV.
It could be the medication making you dizzy. I'm on cyclizine and it has reduced the sickness but made me very dizzy. Sea bands are helpings they're about ten pounds from the chemist.
I had a terrible time in my last pregnancy and swore I'd never do it again but here I am again. It's hard to see past the sickness when you feel like that, but I'm finding it easier to focus on what it's like getting a baby at the end.
If the meds aren't working, ask to change. I feel for you, it's very hard.