I've just returned to work a month ago...so I'm getting used to this pumping thing...I just recently noticed that sometimes (and now it seems more frequently) my EBM has a blue tint to it. Is this normal? Is it safe to give? I've given the milk to my baby because I figured if I hadn't pumped it I wouldn't have known what color it was anyway. And I know that sometimes it can be tinted blue...I was just wondering if it's ok that it's this color more frequently. It almost seems more watery too.