Living with Neurologic Issues

I am a 20 year old female. I have been having these odd dizzy spells for a few weeks now. What happens is I feel fine, and then out of nowhere my eyes go funny like I’m looking through a kaleidascope and the whole room sort of tips on its side. It comes on so suddenly and literally only last a second but then I have to put my head between my knees for about 15 minutes as my balance is completely off. Sometimes I’ll throw up afterwards.

I have no blurred vision, deafness or ringing in the ears so its not vertigo And I only have a slight headache for a short while afterwards. The first time it happened was about 6 weeks ago when I was just sitting at the computer and it felt like a plane hit the building. I screamed out and toppled out of my chair it was that sudden. They are happening more frequently now - up to 3 times a day - but less severe.

I don’t believe it is anything in my everday life that is causing it, as it happens anytime of the day and I can be doing anything such as sitting at the computer, eating, drinking alcohol, walking, sitting on the train, standing and lying down. Between the times of these spells now I’m generally feeling worn out, slightly dizzy, and headachy. Brain scans, blood tests and eye exams all came back fine and doctors are stumped. I have no idea what this is. I have tried the process of elimination but still haven’t pin pointed the cause of this. I have never been quite so sick in my life but I know that this is serious. If anyone has any help as to what I’m dealing with I would very much appreciate it.