I do drink a lot of water while vaping as my friend recommended and just like I read online. I have been doing direct lung inhales since yesterday but I only recently tried mouth to lung but I like the former better. Which one do you do? And do you feel a difference? And last but not least, how often do you change the coil? My kit came with two disposable coils and one that I can rebuild - my friend says that rebuilding the coil usually results in a better experience than using those disposable ones, but I am not sure if I want to go through the hassle, though.Coughing is normal when you begin vaping. Are you doing direct lung inhales or mouth then to lung?
Also remember to seriously increase your water intake. Not soda, coffee, tea... Good old aim water. The PG in e-juice can dehydrate you a bit & water does help flush out your system too.