My 2 1/2 month old has had chronic nasal congestion since about 2 weeks of age. We have tried every formula and it does not change. He has silent reflux. He gags and coughs as well on this congestion that seems to be getting worse. He has no rashes, no diarrhea, no vomiting, etc. Fussy at times and drinks fine. He is on Enfamil Gentlease. How can I tell if he could have a possible milk protein intolerance, could breathing and congestion be the only sign or symptom of a milk allergy? Or is it just from the reflux?