I used to smoke Marlboro Lights. Usually around a pack a day. I started vaping at 18mg, realized i could quickly go to 12mg no problem, so that's where i've been for the passed month. Lately, though my vaping habits/frequency hasn't changed, i've started getting antsy and shakey, and feel like i'm gonna either gonna jump outta my skin, or crash, or both. So i have to stop vaping for half an hour or so, then resume as needed. Is that a sign that i should drop nic level again? At first i thought it might've been a higher level of juice that the vendor accidentally mixed up, but i've gotten this way on the last 3 juices, and 2 were from different vendors. I didn't get like this at all really on 18mg, i just dropped cause i figured it was better for me, and i knew i'd be vaping quite a bit all day. I'm just worried about getting a decent TH at 6mg nic.