Hi, I don't know what treatment you had but the symptoms that you mention sound familiar (from my dad's case). I suspect that you might be experiencing Neuralgia.

You have mentioned Vertigo but you may have experienced Syncope. You need to urgently consult a team of Cardiologist and Neurologist. What you might be experiencing is initial stages of Neurocardiogenic Syncope induced by Glossopharyngeal Neuralgia.

In advanced stages you may experience recurring attacks of severe pain in the back of the throat, the area near the tonsils, the back of the tongue, and part of the ear.