Expressed milk with blood

Hi all. Need a little advice / verification here from those who had blood in their expressed milk. I have recently had expressed milk that had tinge of pink, which i supposed is caused by blood. I stored the express milk in fridge as usually and when I was about to use it for feed, i realised that the blood becomes sediments as per image enclosed. Is this normal? I kindof wonder if its really blood. And do you filter that before feed?