Whilst driving this evening i suddenly felt extremely heavy

Patient: Whilst driving this evening i suddenly felt extremely heavy asthough gravity had doubled in strength, my head began to fall forward and i had no control over it.This lasted around just two seconds thankfully or it could gave been alot worse.Since then my chest has felt tight and my head feels odd athrough i have my palm pushed against my forehead.

Symptoms: Heavy head and tight chest

Doctor: