Numbness of hands, legs and feet and feeling very dizzy?

i was working about a week ago, and i sat outside on my break with some friends while they were smoking.
all of a sudden my head started to spin, i felt really hot, and my hands, legs and feet went numb, i got sent home early, and when i got home my dad said it was probably a panic attack, but ive had another one since, where i passed out but i had been drinking, and each day it keeps happening, are these really panic attacks and what can i do to stop them ? x