Yep, right here, sore jaw and sometimes tongue.
I think it's inevitable. You're used to drawing
through the filter of a cigarette, not through the pinhole of an e-cig cartridge. One is simply a harder draw than the other. On top of that, you're probably spending more consecutive time
vaping than you did smoking a cigarette.
I'm pretty new at this myself, so I'm assuming once I get used to it, the soreness will pass.