so i just started using the diva cup and ive noticed something weird and im not sure if its normal? more than once when ive removed it there is obviously blood, but there is also a clearish watery substance settled on top of the blood. after ive cleaned it i make sure the inside is dry so i dont think its water and i highly doubt my urine can get in there, it would be beyond weird if it could make that trip. is it possible, or even normal for the blood to separate?

edit: i am over a year post pregnancy as well if that helps