It is not normal to be pregnant and the HCG in the blood only doubled in a week. It is possible that the embryo has stopped developing or it may be an ectopic pregnancy and further examination is necessary. If the embryo has stopped developing, if a gestational sac is seen in the uterine cavity, you need to have an abortion as soon as possible to avoid heavy bleeding and uterine cavity infection, which can have an impact on future pregnancies. If the gestational sac is not visible in the uterine cavity, it is possible that the pregnancy is ectopic. If it is an ectopic pregnancy, there is surgical treatment and conservative treatment. If the ectopic pregnancy has ruptured, there is intra-abdominal bleeding, the patient has more pronounced abdominal pain and more fluid in the abdominal cavity, surgical treatment is needed. If the HCG in the blood is low, the patient’s symptoms are more stable, there is no obvious abdominal pain, and there is not much fluid in the abdominal cavity, it is possible to do conservative treatment.