Hi there mummies. I'm wondering if a baby can be allergic to breastmilk?

No it is not your breastmilk your baby is allergic to, rather it could be something in your diet. One way of finding out what it is, is to start eliminating types of food from your diet. If your husband is allergic to any types of foods, eliminate those too. Your baby could very well be allergic to something he is allergic to.