This must be a very challenging time for you with a sick child at home. I recommend that you discuss this with your pediatrician
. You describe several symptoms and physical findings that are bothering your baby right now, and without doubt the best thing to do in this situation is to make an appointment with his pediatrician as soon as possible. If he has been diagnosed with asthma
, then some of the breathing difficulties (or "phlegm" in his chest) could be related to asthma or to respiratory infections in young children that can make asthma worse. Anytime a young child like this is throwing up and unable to keep food down, it is extremely important to make sure that he stays hydrated. A baby can become very ill very quickly without adequate fluid intake, and it sounds like your son may need an evaluation to make sure this is not the case.
Your pediatrician will know your son's medical history as well as his last exam findings at a well-baby visit, so he or she will be able to put all of these new symptoms into context and can also suggest the best way to keep your son more comfortable. It is always best to involve a pediatrician in the evaluation of a sick baby, and hopefully your son will be feeling better soon.