At what point might I be able to look forward to not coughing up dark junk any longer? I am a few weeks into this now and I just want to make sure it's still tar and other stuff from stopping smoking (lungs healing) that I'm coughing up and not something from vaping. I have ceased from smoking a couple other times in the past and thought for sure it only lasted a few days those other times. When I started vaping, I didn't have that happen right away. It took at least a week but I am still going at it. I'm just a little concerned. 
