So I smoked ciggarettes for almost 3years I quitted last October 1 2017 and I am vaping for 1 year and half now. I did not experienced any discomfort until last 2weeks ago. It is horrible that I am experiencing shortness of breath after vaping and my stomach is bloated and I couldnt properly sleep. I wake up in the morning with extreme tiredness. What is this? I don't want to quit ecigs but this is serious. I also read a thread about 9years ago with the same issue he just used an inhaler and then he said that the bloat and shortness of breath goes away. I don't have an asthma and also him. I tried max VG, 50/50 VG/PG, 70/30 VG/PG, with 0mg nic and the same with 3mg nic. And the symptoms is not going away. Hope you can help.