Trust your mammy instincts not your doctor!! My baby is 7 weeks old I've took her to my doctor 3 times this week with cough and wheezing and I was fobbed off everytime said its just a cold, she got so bad today wheezing I took her to the hospital and she has a serious chest infection and low oxygen levels and left any longer could of been fatal was his exact words! I know I should have took her sooner but my doctor has always been great til now, im so lucky my baby is on the mend, full of antibiotics but she's doing ok :-D