What causes uterine fluid after pregnancy?

The main cause of uterine effusion during pregnancy is due to threatened abortion, because in the early stage, the implantation of the fetus is not particularly stable, if the pregnant mother's own progesterone value is relatively low, the implantation of the fetus is unstable, thus causing bleeding. In addition, there is also a part due to chromosomal abnormalities in the embryo itself, that is, the quality of the embryo is not good, so it may show symptoms of abortion or threatened abortion. After showing the uterine effusion can be used to protect the fetus, western medicine, then generally to detect the progesterone, hcg and estrogen values in the blood, roughly judge the growth of the fetus. For progesterone is relatively low, can be oral dydroxyprogesterone or progesterone to treat, and traditional Chinese medicine is generally syndrome differentiation, mainly with some kidney anti-abortion drugs.