There are still many clinical causes of brown discharge. If it is a problem of the endometrium, often the preparation for pregnancy will fail. However, if it is a problem of the cervix, for example, because of chronic inflammation of the cervix, which leads to brittle tissue and causes local capillary rupture, resulting in bleeding, the bleeding is relatively small and is not discharged outside the vagina in time, so when it flows out again, it becomes old bleeding and will be manifested as brown discharge, which clinically has no effect on pregnancy. It is recommended that if you are pregnant, you should have regular maternity checkups, and it is best to have an ultrasound examination around 50 days after menopause to understand the situation of intrauterine pregnancy and whether the size of the gestational sac matches the number of days of menopause before you can calculate the expected date of delivery.