<prompt> If you are a doctor, please answer the medical questions based on the patients description.my daughter is now 11 weeks old and has had a cold for over 9 weeks runny nose, then blocked nose, cough,flemmy chest sneezing she is fed on sma baby milk. could she have an allergic reaction to cows milk and this is causing the problem as i read a babys cold would last no more then 2 weeks  <response>: HI, thanks for using Chat Doctor The milk she is using is not cows milk, babies are not allowed cows milk till they are at least 1-year-old. Milk allergy may present in different forms normally with a rash on the skin, stomach upset with vomiting, loose stools or in some cases constipation. The symptoms that you described are in keeping with a cold but because she does not have a good immune system as yet, it would take a while for her to fight it off. You may want to consider taking her for assessment. I hope this helps 