Showers do help, but only really whilst I am in there. I haven't been concerned about it until last night when I was at a wedding, and when I came off the dance floor and was coughing one of my friends from uni looked very distressed at how short of breath I was. Then today I was having lying down and one of the twins lay next to me with their arm across my chest and I couldn't breath at all which wasn't very nice. But honestly most of the time I am fine, just this feeling of a heavy chest. I really don't think I have an infection and I don't want to waste the GP's time for him to tell me that.