Hey mama, ang milk mo is okay pa yan! What you're seeing is normal, the fat separates kapag nag-sit ng milk sa fridge, at pagka-shake mo babalik sa normal, so hindi siya panis. Ang panis na milk usually may off smell or para kasing sour, tapos hindi na mababawi kahit i-shake mo. A few of us pumping moms just gently warm it under warm water or let it sit in warm water para mag-mix ulit ang fat, then it's good to use. Pero if may weird smell talaga or weird color, better discard na lang para sa peace of mind natin as moms!