My baby is ten weeks old, and is doing a great job breastfeeding despite a little oversupply issue. I've been pumping a bottle per day, because I'll be going back to work soon and want him to keep drinking my milk. I've been storing it, though, in regular plastic bags, whihc I've read is not okay. Do I have to throw out that milk? It would be a waste, but I don't want to feed my baby something unsafe! Is it okay to feed him that milk, but start using special breast milk bags from now on? Before I start work, too, I want him to get used to taking a bottle.