My dd has been a bit off her feeds for couple of days but happy in herself. Last night she started with a cough and sounded phlegmey, she was sick after her 11pm feed. She has just woke up screaming and has taken an oz of milk but she seems to be breathing fast and it is her tummy rising and falling not her chest, she sounds like she has something on her chest. She is not in distress but her fontanelle is a bit sunken. Am i ok to wait to see gp in morning? Just worried as tummy going up and down when breathing, or is this normal in 3 week old?