Hey mama, okay lang yan! As long as nasa ref agad pagdating mo sa bahay, basta within 2 hours ka sa commute with the ice pack, it's still safe to combine with your other BM sa fridge, still good for 3-4 days pa rin! A few of us from our BF group do this routine daily, lagi naming sinisigurado lang na hindi siya nag-init sa bag, at once it's home, straight to the ref na talaga para sure. Just mark mo kung anong time ka nag-pump para ma-track mo properly, kasi importante na alam mo kung kelan exactly nag-expire, especially if magsisimula ka nang mag-combine ng different pump dates sa isang container.