DS2 is 5 months. He developed a cough on Friday night and has also had a temp the last few days, too. This morning I noticed he coughed up a small amount of what appears to be green/yellow mucus. Obviously I'm quite worried and wondering if he needs antibiotics. I don't want to wait to leave it to worsen but also don't want to waste GP's time if they're only going to tell me to treat at home with calpol, which I'm already doing.