Progesterone 11.14 can be considered for birth control if ectopic pregnancy is ruled out and fetal heartbeat is present. However, each patient’s condition is different, it is recommended to follow the doctor’s arrangement. After pregnancy, the reference value of progesterone in early pregnancy (first trimester) is generally around 63.6-95.4nmol/L; the reference value of progesterone in mid-pregnancy (12-27+6 weeks) is generally around 159-318nmol/L; and the reference value of progesterone in late pregnancy (second trimester) is generally around 318-1272nmol/L. Generally 7 weeks of pregnancy, if the value of progesterone is below 20nmol / L, must be timely under the guidance of the doctor oral dextroprogesterone or injection of progesterone and other drugs to enhance the value of progesterone, to maintain the body pregnant state to avoid miscarriage. Because progesterone is secreted by the corpus luteum, if the progesterone value never rises after supplementation, the necessity of preserving the pregnancy is to confer with family members and doctors. It is recommended that the patient increase the frequency of tests, conduct a comprehensive assessment and then refer to the doctor’s opinion before making a decision.