Hi Giddy,
I have this too, it's truly awful isn't it? The room goes round and round and round and your ears whistle and you can't do a thing. If I tried to walk I would just stagger and cling on to things.
I completely and utterly understand, and I don't think anybody can until they experience it.
Are you managing your diet? There's a link with salt, probably other things but salt is seems to be a common trigger for a lot of sufferers. There are quite a few menieres support groups online.
Mine has been better for a year or so, I just can't move my head suddenly/get up/down suddenly and I have terrible vertigo. I can live with all this though. I hope yours calms down soon too.