Whether or not vaginal bleeding in early pregnancy is normal should be viewed from two perspectives. If it is due to low progesterone levels in the pregnant woman causing a miscarriage with a small amount of bleeding from the vagina, after supplementing the progesterone, the continuation of the pregnancy will not affect the quality of the fetus, which means that there is no problem with the quality of the child. If there is a defect in the fertilized egg itself, and the child is barely preserved after being treated with a variety of birth control medications, the child is unhealthy because of the problem with the fertilized egg itself. Therefore, early pregnancy bleeding cannot be defined in general terms as whether there is a problem with the child after birth control, but rather whether there is a problem with the fetus itself. If the problem already exists, it will not improve after birth control, so the quality is not good. If there is no problem per se, just low progesterone, and the pregnancy continues after progesterone supplementation, it is a healthy child.