When I got to the shop yesterday, I was given 14mg (and I think that's a percentage not actual mg?). I smoke 3/4 pack-1 pack a day when not on patches (Step 1), and about 1/3-1/2 pack per day on patches. Then I went back after I felt like I continuously needed to smoke, so they changed the juice to 20mg. But after a few hits I'm getting headaches. I still have the need to blow smoke and inhale, and I only get a few hits before I start getting a headache. They're closed today, so I'm going to go back tomorrow and ask for a lower mg...but should I try 16 or 18? The 14 was too little. I know they're not going to keep remaking it for me, so I'm hoping to get it right this time and hopefully I'll be alright the next 24 hours with the 20mg.
I know it's probably hard to judge exactly what mg I should have, but if anyone smoked around the same amount any information or advice would be useful.

I know it's probably hard to judge exactly what mg I should have, but if anyone smoked around the same amount any information or advice would be useful.