Well I am the same now. I was in the Lake District this past weekend and it was freezing and raining, and I know you can't catch a bug like that, but my daughter who is 18 had a terrible chest infection and I think she's passed it on to me - however she was very phlegmy and I seem to have a drier (and if anything far more irritating) cough.
I don't know any remedies - cough medicine is a no no as it suppresses the cough which is a mistake ( coughing is the body's natural response, isn't it Herman?), so I think it's a ride it out thingy, unless you are showing more serious symptoms (like coughing up blood - as my daughter was
) A good course of antibiotics sorted her out, but I think I will be ok in a week or so, although I have felt very bad this last week.