My 3 1/2 month DD is fed by EBM exclusively right now. In the past month she's been extremely fussy and reluctant to eat. However, a week ago she broke out some rash (tiny red bumps) on her chest and stomach, and felt much better instantly, so in the past week she regained her appetite and was all happy again. But yesterday morning she all of a sudden started to cry hysterically again and refuse to eat for 9 hours. Later on in the day she started to eat normally but still break out crying on the top of her lung suddenly from time to time. We happened to visit my in-laws yesterday afternoon, and they are suspecting that she has colon spasm or some kind of allergic reactions to my milk, and are pressuring me to switch her to soy based formula. My Father-in-law is a doc himself (not a ped) and they raised 3 out of their 4 boys using soy formula due to lactose intolerant.
Other than the rash and fussiness my DD also has been having congestion problems for quite a while (excessive mucus in her nose and throat), which I read can also be a symptom of milk allergy? My question is, can a baby be allergic to breast milk itself? Or it's mainly the cow's milk that's passed onto the breast milk? If so I can correct the problem by cutting my dairy in take and still give her breast milk right (I stopped drinking milk for a couple of months, but still eat yogurt and small amount of cheese)? I'm just not willing to wean her off like this, but don't want her to be in pain either. Suggestions?