Anytime I leave the house and think LO may get hungry....I grab a bottle of breast milk from the refrigerator that was pumped sometime within the week. I just pull it out of the fridge and pour from the pumped bottles into a playtex bottle and put in my bag. I do not put it on an ice pack or anything as it is already cold and is good for a few hours as long as I don't leave it in a hot car or such. Is this ok? What do y'all do?