Hello everyone! Girls, who had a cow's milk protein allergy or lactose…

Hello everyone! Girls, who had a cow's milk protein allergy or lactose intolerance in their baby? What did you remove from the diet? I haven't been told anything by a nutritionist yet. We have frequent vomiting, diarrhea, hives on the face, crying, and burping often, loudly. They said vomiting was due to hypoxia, but it has passed. Nothing changed. Not realizing this, I ate dairy products and those containing milk. So, I had breakfast with butter, cheese, and even more vomiting. Is it painful for the baby? He started crying a lot recently.