I really feel for you. It is horrible.
I have had the same thing but they called it "labyrinthitis". I too take stugeron for the nausea - I call them my wonky pills. Willa, it will get better, but sometimes it takes time.
It comes and goes, but recently with less and less frequency and shorter episodes, fortunately. I recognise the symptoms and take the pills before the vertigo starts. I get a horrific headache at the base of my skull. The first time ithappened, I though I had had a stroke!
Things you find stressful that other people don't notice.