Had to call an ambulance at 5 in the morning ,i'd been up all night in front of the computer and also vaping all day from the moment i woke up. I was suddenly overcome with pains in my my arms,cold hands and a burning sensation in my windpipe from top to bottom. I also started sweating heavily ,the cold clammy uncomfortable type of sweating. I thought i was having a heart attack ,completely freaked me out. I'd also had the same arm pain and soreness in my windpipe earlier in the day on the way from the shops. Anyway after about an hours worth of tests i was given the all clear . Though now i'm thinking should i be vaping non-stop from the moment i wake up. I was also thinking did i catch some bug or something from the vape tank. So still not sure what caused it , probably a combination of things. Sitting cross-legged for hours in front of the computer probably doesn't help. I vape 3mg nicotine ,could it be nicotine poisoning ?