Hello! You are not alone. I have these same symptoms. Boy do I hate seeing new people on here as this illness is so so awful, I really feel for you and wish you the best. Here is a link to a post I made with my symptoms and some explanations. New here, what has helped you? - mvertigo.org vestibular disorders support forum
There’s not always a direct cause, more of a correlation, finding it, and fine-tuning triggers. Still have not found mine. If you make an appointment with an ENT they will help you get the ball rolling. Next would be to see and neurologist or more specifically a neuro-otologist who specializes in this illness. I really hope you can find some relief, PM me if you ever need to talk or have questions 
