If you are pregnant and have brown discharge from the bottom, clinically, if you have had a pre-pregnancy checkup and are in good health, this may be a preeclampsia, or it may be caused by the cessation of development of the embryo. When there is a lack of progesterone in the body or a history of trauma or poor embryonic development, bleeding occurs when there is a detachment of the gestational sac from the uterine wall. This bleeding is not expelled outside the vagina in time, so it pools inside the uterine cavity, and when it is expelled outside the vagina again, it has become stale bleeding, so it is brown. It is recommended to find out the current development of the embryo through clinical blood tests and ultrasound. If the development is okay, it is recommended to rest in bed and give treatment to stabilize the fetus. If the development has stopped, it is recommended to give timely clearance surgery.