At first I thought it was just my lungs clearing out. I mean the amount I hack up is far less but I am starting to get worried. I have no medical insurance to see a DR. Should I be worried? Even my dad that quit after over 35 years says his is clear when he hacks now. I smoked for around 12 years. We have both been on ecigs the same amount of time. He was vaping 18mg and I have been vaping 25mg. Not sure if that makes a differance.