So I have been vaping for about a week now and I have the worst mucus rumble in my lungs. It is especially bad when I lay down and I assume this is my lungs healing itself and trying to push the tar out. My question is how long will this last and should I expect this stuff to actually come up. Right now I would actually be really happy if I could just cough it up and get it out of there. I just started taking Mucinex to help. Can't believe what I have done to myself with all those years of smoking. Oh well, hopefully vaping is my healthier answer and the future will be brighter.