fast heart beat when smoking

so I stopped smoking for a little over 35 days.. i passed my drug test!!

the day i found out i passed. i smoked fat bowl of some jack herer i got from the club.

at first it was a heavy heavy head high. pretty gnarly to be honest.. i was like damnnnn its been awhile... it hit me hard. then i started to feel very ansy.. and my heart was beating WAY FASTER then it should.. i was kind of freaking out. so i just layed down to chill out and ended up falling asleep.. woke up like 4 hours later and smoked some indicia and that got me stoned.

then today.. my second day of smoking i smoked that same JACK H.. and it made me feel the same way. i went out skating and just felt light headed and just wanted to sleep.

are the normal effects on not smoking for awhile??

to be honest i almost felt that weed was dusted. with like pcp or some shit. ive NEVER felt that was from smoking bud. the weed came from a legit club. so im confused.