E.W.
Hi L.! Wow - your doing a lot of pumping! Be sure to pat yourself on the back! Breastmilk will "settle" when it's being stored in the fridge...and will separate...so you'll see the fat rise to the top. You can store milk for 7-10 days in the fridge...so if it's been refrigerated, then it'll be fine. If you need to store it beyond 10 days, put it in the freezer.
Hope that helps!