I used marijuanna? I'm 14 please help?

I was feeling down so I went to the cabinet where my dad keeps this tube of water thingy with marijuanna on the side and on the top there is something where you put your mouth in and inhale it. My dad usually light up the side but I didn't, I just inhaled a little about two times. I checked in the mirror and my pupils slowly rise and fall. Is this normal? I don't seem buzzed or anything. I don't know why I even did it in the first place. Iv'e just seen my parent doing it a lot of times that I wanted to see whats their fascination twords it