Can i have experienced a bad hangover or alcohol withdrawal syndrome?

Only you can know: If you have been drinking enough to have either. A hangover is not a withdrawal - it is a reaction to the alcohol and its metabolic by-products (ketones) as well as congeners (flavorings, other chemicals) in the beverage. Withdrawal requires regular drinking of large amounts over a long period of time, and has different symptoms - tremor, anxiety, sweating, although both have headache/irritability.