Frozen milk?

Lucy

Last night my poor girl had a tiny bit of blood in her poop 😭 we are headed to the dr today but the on call dr last night said it might be the dairy in my diet since I’m breast feeding. If she does have a milk allergy does that mean all the milk I have frozen for when I go back to work she can’t have? I’m assuming yes but I’m not 100% sure. I got spoiled with my first because she was so so easy so the gas, so this is all so different this time.