young babies in day care or preschool can get colds around 3 to 10 times per year with each cold lasting up to 2 or 3 weeks which may feel like all the time. they can certainly start getting sick even at a month or two of age. virus infections may also happen when a baby is teething. it's unusual however for babies to have allergies before 9 months of age and some experts feel kids don't have seasonal allergies until closer to 2 or 3 years old. . if your baby doesn't have a fever and seems to be fine except for the noisy breathing it's probably nothing to worry about. but if the stuffy nose interferes with sleep or feeding or if he seems to be in pain be sure to have your doctor check him out.
could my 5-1/2 month old's stuffy nose be caused by a cold or allergies?