Karen, I'll be curious to hear what others have to say but I don't see how an exclusively breastfed baby can gain too much weight. As for the wheezing I feel it is very very difficult to hear wheezing in an infant without a stethoscope. I haven't had a parent say they heard wheezing with their ear at this age and then confirmed it in the office. I also haven't hear wheezing in infants w/out a stethoscope. Often some nasal saline does the trick. -Rob Rob Cordes, DO, FAAP, FACOP Wilkes Barre, PA mailto: [log in to unmask]