I stopped smoking and started vaping a week and a half ago, and ever since then i started feeling lightheaded and yawns excessively when vaping. I'm not entirely blaming it on "vaping" but worrying whether vaping isn't for me or i just used a bad batch of juice? By the way I'm using an ego 1100mah battery and CE5 clearomizer with a mixed of two juices in a 10ml bottle, 5ml 0mg menthol and 5ml 6mg chocolate mint.