I was a smoker since i was 13, im 22 now and i started vaping 6 months ago. I started at 6mg and then dropped to 3 and then 1.5 and now i just started with 0 but just recently the past 2 days when ever i vape i get light headed, dizzy and my head feels like its being squeezed almost like a pressure. It hasnt happened before and i dont vape as much. I tried going back to nicotine ejuices and it still happens. I havnt gone to the doctor yet but i dont think he could help much because of how little science has involved itself so far with vaping. The things i know is that the ejuice is exactly 0 nicotine and i tried ejuices i used to use and it still is happening. Its gotten so bad that i ended up having a smoke and it didnt happen. I am worried because if this keeps happening im going to end up back on cigarettes. If anyone else is having this issue i want to hear your opinion on this. My e-juice has always been 70VG 30PG and still is. I also dont have a PG allergy and am not sensitive to PG.