Re: Bronchitis? Sick for a week, don't know whats wrong!
I agree that green mucous (or green anything that comes out of your body) is a sign of an infection. Maybe just a bad cold, maybe the flu, or maybe bronchitis. It doesn't sound like asthma, though...asthma isn't an infection and wouldn't cause the green phlegm.
Be careful with how much force you put behind a cough, too. Coughing too hard can not only cause hernias, but can even make you crack a rib. If the coughing is really, really bad, take a suppressant rather than an expectorant (but don't take both at once).
I had what I think was bronchitis a few weeks ago, and I ended up needing antibiotics to knock it out. Of course, I have also had several bouts of bronchitis that I just let go away on their own (much to the dismay of my roomies who had to listen to me coughing for weeks). If you can, I would say to see a doctor. If it is bronchitis, it could possibly become pneumonia, and that is not something to mess around with.