I'm back to work, so I'm pumping for my daughter while she's at day care. Two days this week, I've noticed that her bottles of milk (after having been warmed at daycare) have clumps of what looks like curdled milk floating in it and sticking to the sides. The clumps were irregular and resembled cottage cheese - definitely not the normal separation you see when milk cools - and there was a clumpy film sticking to the inside of the bottle as well.
The first time it happened the daycare had just warmed the bottle before I picked her up, so I caught it before she drank any of it, but today she had already drank most of the bottle! It doesn't smell rancid from what I can tell, but it looks wrong. The milk was refrigerated but not frozen beforehand, and warmed in a bottle warmer (warm water). Any thoughts on what could be causing this?
Re: Breastmilk looking curdled, smells fine
Also, it's normal to have a blue, or even greenish tint to it! I was freaked out when I first noticed that too!