I know coughing up lots of mucus is common for asthma. I don't have that, but sometimes (had it before, and for last couple of days along with slightly more noisy breathing than usual) I get the sensation that there might be something there that wants to come up - but it never actually does.
Have mentioned it to doctors before but they've never said anything about what it could be, usually when I say it they listen to my chest and nothing there as ever, so think it's probably not an infection.
Not worried, but wondering if I'm freaky in this respect as well or if it sounds familiar to anyone?