I have recently had trouble sleeping. This is caused by a tickle in my throat whenever I lay down, and it makes me cough. Usually when you cough, you don't want to be sick until you cough for a while, however, it takes 2/3 coughs and i'll be gagging on my own sick. I have also been having stomach pains along with a bad appetite. I have had 2 pneumothorax's so I don't know if theres any link?