Ectopic pregnancy is also pregnancy, only that the pregnancy is not located inside the uterine cavity, but outside the uterine cavity. The blood HCG in the body will also show a rise, and the pregnancy will also be detected through urine HCG test, and through blood HCG, it is more detectable whether or not you are pregnant. Therefore, if you find that you do not have menstruation and there is a small amount of vaginal bleeding, it is recommended that you go to the hospital, preferably to draw blood for HCG test, and it is recommended that you check it again every other day, and if the blood HCG does not double the original rise, but only rises a little bit, then it is highly suspected that it is an ectopic pregnancy. The vast majority of patients with ectopic pregnancy are found to have a gestational sac in the fallopian tube or in a location other than the uterine cavity by ultrasound at around 40 days of pregnancy.