Hello everyone. I have been on my 510 for about a week now and honestly, I am not crazy about the way I have been feeling. I have been coughing up lots of phelm and my wind pipe feels a little coated but raw. I don't chain vape or anything, I visit my vape about every hour or two. I would imagine that if you were switching from analogs that you would think that the phlem ect is part of your lungs sloughin off true smoke, but the thing is I went from Nic gum to these to get away from chewing my cud like a cow all day, and to enjoy the experience of smoking with out the yuck factor. I have been using nic gum for almost 3 years now.. anyone having issues with the vape making them feel like they are 'coming down with something' ? I am vaping on kiwi 18 mg juice.