Not really sure what to do here so I am hoping for some insight. I have been vaping now about 3 months and no matter what I do or try after about 3 pulls on my provari I almost instantly get a heavy feeling in my chest like I can't breath, I hack and cough very frustrating. I've tried everything I can think of tried lighter colored juices then darker colored juices, from there I went to all pg then all vg then the whole gamet of different mix combos. I currently have kanger protank 2.7 ohms running at 4.5 volts on my provari. And I also have an ego c that I run with a dual coil carto prepunched in a tank. Nothing seems to make a difference and I do believe that if this doesn't work out it will only be a matter of time befor I'm back on the analogs. Is it possible that this just isn't for me ? If anyone could share similar situations or has any advice it would be greatly appreciated.