Cow milk intolerance?

Amy • Mom to 4 beautiful girls. 3/3/10, 4/27/14, 4/8/17, 3/7/19.
How did you come to find out you couldn't eat/drink any dairy while nursing? I have a hunch my baby is not liking my dairy intake and I'll ask her doc about it at her appointment Tuesday, but just figured I'd ask on here too.