Progesterone can play a role in stabilizing the embryo in early pregnancy. Progesterone is more effective in preserving the fetus and is used for early miscarriage aura. Progesterone is a commonly used drug for early miscarriage aura, which can be taken orally, or injected intramuscularly or used intravaginally, etc. The specific dosage needs to be determined according to your specific situation. The use of progesterone to protect the fetus is recommended to adhere to the medication to about 3 months, only to 3 months of pregnancy fetal development is relatively stable to prevent miscarriage. In the middle of pregnancy, when there is an aura of miscarriage, the use of progesterone is not effective, you need to use magnesium sulfate and other drugs under the guidance of the doctor. The use of fetal preservation drugs does not have a significant impact on the fetus. During pregnancy, regular maternity checkups are needed to see how the fetus is developing, and there is no need to worry too much as long as the fetus is developing normally. The first three months of pregnancy need to be reasonably supplemented with folic acid, can prevent fetal malformations, during the period of fetal preservation need to eat more high-protein food can promote fetal development.