I have not had a real cigg for about 3 months. I go through Vapor company in Freeport, Il and buy their juice. The menthol with PG I really don't have a problem with, except with my mouth burning.. I do fill my own carts with a needle. I bought Blueberry, which is very tasty, so maybe I puffed on it too much..That same night I started coughing, wheezing and my chest hurts, even to inhale an e cigg. That was the blueberry flavored cart, I have 18 mil,which I am used to. I have smoked other pg brands for 3 months with really no problems.
Maybe I have a cold, or someting. I am not sure.
Here is me on youtube, trying to explain.
http://www.youtube.com/watch?v=QMgjoCIZJPg