It is difficult to tell whether ectopic pregnancy is early in pregnancy. Usually, ectopic pregnancy can be ruled out when the blood HCG reaches above 2000 U/L around 40 days of pregnancy and the fetal sac should be seen in the uterine cavity during ultrasound examination. Ectopic pregnancy, also known as ectopic pregnancy, can basically be ruled out if there is no abdominal pain and vaginal bleeding within 8 weeks of pregnancy. However, ultrasound examination is required to confirm the diagnosis of ectopic pregnancy. If the gestational sac is not observed in the uterine cavity, or if a mass occurs in the adnexal area, ectopic pregnancy can be considered. However, delayed ovulation in some women may also result in the absence of a germ and fetal heartbeat on ultrasound at more than 40 days, which requires a review 2-3 days later. And some ectopic pregnancies may rupture at more than 30 days. Therefore, it is not possible to specify the exact number of days to rule out ectopic pregnancy from the point of time, and a comprehensive judgment should be made based on your symptoms, ultrasound and even blood HCG level. In addition, most of the patients with ectopic pregnancy may have irregular vaginal bleeding when they first stop menstruating, and they may mistake it for menstruation and ignore the possibility of ectopic pregnancy. Therefore, abnormal vaginal bleeding that occurs after menopause should be taken seriously.