Depressed over vertigo, dizziness, nausea...

More than 3 weeks, been having vertigo, dizziness, nausea & seeing flashes of dots in which I ended up A&E few times requiring 'coconut juice'. Brushed aside gastritis. Vertigo itself already making me very depressed about it. The feeling of fatigue, over exhausted is TERRIBLE!! My ENT appointment is on 12 N0v which is next week. Argh!!