Does/Did your infant have a milk allergy? How and when did it start?

Maria asked:Mybaby is9 weeks old. Thisweek,shehaddiarrhea withblood init,vomiting,andwhatlooked likeeczema. Thedoctor thinks itwasjusta GI infection. SheisonNutramigen rightnow andwillswitch back toherregular formula ina day ortwo totest if[...]