Weird high pulse 10 days after extreme paranoia cause by weed.

So , i'm almost 19 years old ,male, smoked pot twice this past month , it all started about a month ago when i was with my friends and they had some weed , and i was kinda forced to try it cause ,the hell ,why not , so anyway ,we smoked some weed from a pibe ,and after like 5 hits ,all my friends got high except for me, so i kept on going until like 10 hits and nothing much happened , just like change of mood , it became a little easier to make me laugh and that's all !
But the second time was after like 10 days , i got myself some pot with a friend of mine , and we smoked it by the lake , this time i had a whole joint for myself , and because of the last time's experience i thought i was snoop dogg or something lol so i started smoking the joint , took like 4 hits in 40 seconds , i started coughing so bad , but i kept going until like 7 or 8 hits in 2 mins , and then my heart starting racing , i got so scared because back then i didn't know that smoking pot can make your heart race , i thought that my weed was laced , though it's impossible cause well , it's almost legal in here , canada... and nobody fucks with weed cause it's not worth it , you'll lose customers , anyway i got so paranoid , i started freaking out , i started having trouble breathing which made my heart race even more , after a 10 mins of being on this state , i thought i was gonna die , i couldn't handle it any more so i made my friend call 911, an ambulance came , took me to the hospital , i think they gave me some kind of seductive , but it still didn't kick in that fast , i spent like 3 hours in the hospital freaking out , and after my high was over , the doctor came to me , asking me what happened , and i explained it all , she was like testing me to see if i'm still into that freaking episode , but then i told her, this feels strange, if i was dying i should have been dead hours ago ,am i getting paranoid cause i've been feeling so since an hour or so but still stayed paranoid cause of my racing heart , the doctor told me that yes i was just paranoid and that sometimes weed does that and that i should be fine and i can leave now.
so i left , all was fine , actually i kept laughing at my self and saying that i was an idiot for how i got scared and all , so i called a cab, made it home , took a few hours of sleep then got back up ,that day didn't feel that much good , but after i took a nice 8 hours of sleep , i started feeling like myself again, all back to normal except ONE THING , it's been like 10 days , and i've been having a weird heart ever since , like my resting Pulse is like 100-115 beats a minute , blood pressure is perfectly fine , (125-70) , and i've been monitoring it all day , that's how it stays , is that normal , like why am i still fucked up from that night , is it because of the strong panic attack i had , i mean i have a really strong personality , i never got scared after that day , been living normally , i live by myself , i don't fear much things , like nothing super natural ,why my heart is that messed up , after seeing that my pulse was that high while doing nothing, i went to , did 30 mins of cardio and sprinting and played basketball for like 20 mins , took a break , and then a shower ,and meajured again , and i had like 115 which is weird and normal cause that's how it should be after exercising , but now it's like 12 AM, i can't sleep cause i'm scared that something is gonna happen tonight , because last night , i woke up suddenly 2 times while sleeping and seconds after that sudden woke up i had fast heart beats , and then a sudden deep breath (uncalled for) felt like sleep apnea which freaked me out a little bit ,that's why i don't wanna sleep this night before making sure i'm fine.
So please , any help or answer would be appreciated ,sorry for the long story ,i felt like i should include every detal.
Thanks in advance.

Update 1 :- An update , almost had another panic attack , i was watching a video , and i felt my heart beating a little faster and i almost panicked , controlled it though , it's just annoying , still don't have the guts to sleep , what to do? (1 AM).