A.,
I have been an ER nurse at Childrens Medical Center and can tell you that you should try to bulb suction your baby's nose with lots of saline drops. You should have been sent home with the blue bulb suction from your delivery, or you can purchase one at Walmart, a pharmacy, etc. It may sound like it is in the chest, but the chest and nose are so close on the anatomy of the infant, that the sound can resonate. The way that I have taught tons of parents to do this, is to lay the baby down, place the saline drops in one side of the nose, and while holding the other side of the nose closed, gently place the bulb as far in as you can, and aspirate the saline ( and hopefully) the mucus. I usually use about 1cc of saline per side, and suction 3 times per nostril, then switch to the other side. I repeat if it seems that it would be beneficial. Then, I will place the bulb suction in the mouth and gently cause a little cough. I have noticed that a ton of mucus collects down in my children;s throats, historically, and this seems to help the most by preventing the mucus from draining down into the chest, causing the cough. I know this method may sound disgusting (nose to mouth to nose, etc,) and somewhat barberic (your baby will cry- alot), but I have learned over the years, that the over the counter meds are not all that beneficial, and have some nasty side effects. Just a side note-- Babies are what we call "obligatory nose breathers" until they are about 6 months old. This means that if their nose is clogged, they are unable to breathe. Unlike us adults, when our nose is stuffed, we just open our mouth. He really is not old enough to have allergies. Asthma is not diagnosed until later in childhood- at this age, with similar symptoms, it is called bronchiolitis. Good Luck and let me know if this helps!!