Not sure if this has been addressed yet, but caffeine sensitivity is a know side effect of vaping my friend! Not sure if you drink gallons of coffee like I used too but I used to get almost the same symptoms as you after vaping, I jumped off the wagon for awhile because of it; I read about caffeine causing issues a month later, cut down on espresso (as painful as it was), and vaped my face off with no problems. Good luck man! I am glad you are having at least a bit of an easier time. 
