I don't know if I am imagining things or not, throwing it out there to see if anybody else is the same. I am at 3 months of vaping. Have been using Niquid Midnight Express for about a month now. Over the past 2 weeks I have been experiencing flem in my esophagus, not the throat, but a little lower down into the chest. If I breath hard or take a deep breath I cough. In the morning I can only take the very lightest of hits when I vape, feels like after a night of smoking too many analogs used to. I am only vaping about 3/4 of a tank of liquid a day. (T3) so I don't think its from vaping too much I am starting to wonder if its from the Niquid juice? Anybody else experiencing this?