If I am feeling a little light headed is that because of the Nicotine content (slight overdose?, not enough?) or is it because of the propylene glycol? I don't have any headaches, or any pain at all really. I haven't seen any hives, leisions, sores or anything like that. I am not really dizzy but my vision gets very mildly fuzzy. Specifically my periphial vision. Should I stop vaping? I have some 100% VG juice on the way, and some 80/20 as well coming. So I guess I could try those and see if it's the PG but this won't cause any longterm problems, will it? Has anyone else felt this before?