Immunoglobulins do not help to double the HCG. The development of the embryo can be determined early in the pregnancy by drawing blood to check that the HCG has not doubled. If the HCG does not double or increases slowly, the embryo may be underdeveloped. In addition, conditions such as miscarriage and ectopic pregnancy may also affect the doubling of HCG. You need to go to the hospital for ultrasound to see how the embryo is developing and to rule out ectopic pregnancy. Immunoglobulin has antibody activity and its antibacterial and antiviral effects have no fetal preservation effect, nor does it have a therapeutic effect on ectopic pregnancy. If the embryo is underdeveloped and needs to be aborted, there is no need for fetal preservation. The use of immunoglobulin is not very useful. Ectopic pregnancy requires surgical treatment to avoid bleeding. The use of immunoglobulin in early pregnancy is to strengthen the body’s resistance and prevent the body from being infected by bacteria or viruses, and has no effect on HCG.