Is this the reason for my negative reaction to marijuana ?

I recently discovered the disease of addiction in my grandfather for marijuana and mostly alcohol.My mother has done everything to avoid these traits by never touching a substance to abuse.

I have tried smoking marijuana on a couple occasions and had terrible reactions, very amplified effects compared to those participating with me. Could this be a sign of possible addiction in me ?

: http://alcoholdrugstreatment.info/is-this-the-reason-for-my-negative-reaction-to-marijuana-2