So if I suspect that my 5 week old has a milk allergy should I go ahead and change her formula now or wait until I speak to her doctor to confirm before changing formula??? Her symptoms are vomiting, a wheezing sound (like shortness of breath) during the bottle, possibly diarrhea? Idk I think it might be normal looking poop. I breastfeed as well but I’m also eating dairy. So she’s getting it both ways. I currently use earths best sensitivity formula that has reduced lactose but still contains milk