I recently bought a blu starter kit which the cartomizers have usp glycerin. It seems it makes my chest feel like someone sitting on my chest and i feel the need to take a deep breath but i just cant get the deep breath i am trying to get. I went to er and dr said i should go back to smoking analoges. But no i dont want to. My throat feels fine and i get no rashes or anything. Please help me do i switch to 100% pg liquid?