Seen the ears nose and throat specialist today.
Benign paroxysmal positional vertigo.
Apparently I got microscopic rocks in my head and they broken off and floating around the vestibular system.
They knew exactly what it was when I started explaining the symptoms.
They've arranged a cat scan.
Gave me a print out with some exercise to help settle the crystals inside my ears back into place.
They told me I need to sleep sitting upright for the next few days