Since I began vaping, I suddenly have a pretty bad startle reflex. For example, when I'm sitting quietly at the computer the furnace will click on (not loud) and I get a weird feeling that runs through my head. I, currently vape 6mg of nicotine. Could this be too high? I also still smoke because I can't handle the strangeness I feel when I vape. I fill up my 510 cartrage about 5 times a day with a few drops and I still have my 30mL of juice that I bought in October. Anybody have this problem?