HCG is human chorionic gonadotropin. If your blood HCG is still low after taking HCG, you need to continue to follow the doctor’s instructions for intramuscular injection of HCG to promote the normalization of blood HCG. Low blood HCG can easily lead to preeclampsia during pregnancy. After checking low blood HCG during pregnancy, you need to actively inject chorionic gonadotropin to protect the fetus, and if it is still low, you can continue to use it according to the doctor’s instructions. HCG is secreted by the trophoblast cells before the fertilization of the egg, and it grows rapidly in the early stage, about 1.7 days, and reaches its peak at 8 to 10 weeks. If the blood HCG grows slowly or is low, you need to go to the Obstetrics and Gynecology Department of the hospital and follow the doctor’s instructions for fertility preservation treatment. Since HCG is a prescription drug, you need to go to the obstetrics and gynecology department of a regular hospital and use the drug under the guidance of a doctor, not blindly use the drug on your own.