Does the blood that came down after a miscarriage of a two-week-old fetus count as nifas (postpartum bleeding) or menstruation, and when is prayer permissible?

A pregnancy that is two weeks old is still a nutfa (a drop/zygote). The blood discharged because of it is not considered nifas (postnatal bleeding) due to the absence of discernible human creation within it. Nor is it considered hayd (menstruation) unless it coincides with the usual time of the monthly period. Anything other than that is dam fasad (irregular/diseased blood), which does not prevent prayer or fasting.