If vaginal bleeding occurs just after the pregnancy is detected, it is often clinically caused by the following reasons: 1. Pre-eclampsia, which can also lead to symptoms of pre-eclampsia before vaginal bleeding occurs because of embryonic gene deficiency, a disease in the pregnant woman herself, premature sexual intercourse or in case of exertion or trauma. 2. caused by ectopic pregnancy, which in the early stage of ectopic pregnancy The clinical manifestation is irregular vaginal bleeding, often without lower abdominal pain, which needs to be judged by monitoring blood HCG and, if necessary, ultrasound examination to understand the location of the gestational sac, so that the possibility of ectopic pregnancy can be determined visually. It is important to take vaginal bleeding in early pregnancy seriously and to have blood tests and ultrasound examinations done to determine if intervention and treatment is needed based on the results.