What Causes Palpitations, Discomfort In The Chest With Numbness In Arms?

i think i may have had a heart attack last night i was smokeing hash oil, because i had, had a stressful day. which i know was most likely the cause .i felt fine at first and out of nowhere my heart beat got really really fast almost like my veins were going to pop because there was so much blood pumping thru. as if i had just rain 3 miles. then there was a pressure not really a pain right in the middle of my chest,and a discomfort in my upper back. fallowed by numbness in both of my arms. i was cold and sweaty, dizzy and felt sick to my stomach. this lasted about 5-7 min. now all day ive felt tired everywhere. my mother says she thinks it is angina... should i go to the er to be safe?