If you are pregnant and have your blood tested for HCG in the early stages of pregnancy, the value of HCG is greater than 10 mIU/mL, which indicates that there is a possibility of pregnancy. It is recommended to take another blood test every other day. If the value of HCG doubles on the next day, it is likely to be a normal intrauterine pregnancy. It is recommended that an ultrasound be done around 45-50 days after menopause, through which the location of the gestational sac can be visualized, and whether it is an intrauterine pregnancy or an extrauterine pregnancy can be clinically determined. If the blood HCG does not double, it may be caused by the following reasons, such as ectopic pregnancy, embryonic dysplasia or biochemical pregnancy, so further examination is needed.