As I read your post, its sounds so much like what I am currently going though. At first, I thought it was some food allergies or what. But the itch gets really bad at night!! Same like your baby, my baby also breathes very loudly and with heat rash around his eyes. However, the doctor said its alright (somemore 2 doctors).
I am currently not bf, as my supply dwindles by the day. Now I feed formula already.