Breast Milk Q

Elizabeth • BFP on 4/10/17 for baby #2 ❤️ [Baby #1 = Jan 2016]
I've searched and searched online (& on Kellymom) for this one... Can anyone help?
If I have fresh breast milk from today in the fridge, can I take it out 3-4 hours before giving it to LO to warm up or will it go bad?