Human chorionic gonadotropin is a hormone that is secreted by the uterine lining and the placenta during the early stages of pregnancy, and it is a criterion for determining whether or not you are pregnant. When human chorionic gonadotropin is low, there may be preeclampsia or ectopic pregnancy, and it is important to decide whether or not to take HCG injections to increase human chorionic gonadotropin according to one’s own situation. For example, if the doubling is not particularly obvious, and the progesterone is relatively low, do not blindly inject blood HCG, that is, human chorionic gonadotropin caused by the doubling, there will be a chance of ectopic pregnancy, you can ultrasound suggests that there is a gestational sac and then carry out birth control can also be. The development of the gestational sac is relatively good, the progesterone is slightly low, the doubling of human chorionic gonadotropin is not particularly obvious, you can take oral medication to protect the fetus, such as progesterone or intramuscular injection of progesterone. If the fetus is relatively well developed, progesterone is also low, and the doubling of HCG is not particularly pronounced, blood HCG injections can be given, causing a rapid increase in human chorionic gonadotropin.