In early pregnancy, brown discharge is commonly seen in cases of fertilized egg implantation bleeding, pre-eclampsia, or ectopic pregnancy, as well as bleeding after intercourse with cervical erosion. There is no definite link between brown discharge and pregnancy. Women should know the correct way to determine if they are pregnant. The egg discharged by the woman and the sperm ejected by the man meet in the abdomen of the woman’s fallopian tube and become a fertilized egg, which gradually moves towards the uterine cavity with the oscillation of the fallopian tube cilia and peristaltic movement of the fallopian tube, and then settles in a well-nourished place for further development. The fertilized egg destroys the endometrium during the process of implantation, and some pregnant women may experience a small amount of vaginal bleeding or brown discharge at this time, which is normal. The common clinical manifestations of early pregnancy include: menopause (the earliest symptom of first pregnancy), early pregnancy reaction (such as coldness, dizziness, weakness of limbs, drowsiness, nausea and vomiting, dislike of greasy and sour food, etc., mostly appearing about 6 weeks after menopause and disappearing on their own around 12 weeks), frequent urination (the enlargement of uterus presses on the front bladder, resulting in obvious urge to urinate), breast changes (self-conscious breast swelling and pain, enlargement of nipple areola, deepening of color), etc. (deepening of coloring), etc. Women of childbearing age can simply determine whether they are pregnant by the above symptoms, or they can use a pregnancy test or early pregnancy test paper to test. In case the brown discharge is caused by other diseases such as pre-eclampsia or ectopic pregnancy, you can go to the hospital for a definite diagnosis. Clinically, it is often not difficult to make a diagnosis based on the above clinical manifestations, but if the patient has irregular menstruation and is in the early stage of pregnancy, her complaints are often unclear and auxiliary tests such as blood and urine HCG, progesterone, vaginal ultrasound, etc. need to be taken. If the urine HCG is positive or the quantification of blood HCG and progesterone is significantly elevated, and the ultrasound indicates early intrauterine pregnancy, the diagnosis can be confirmed. It is worth noting that the ultrasound may not be able to detect the fetal sac in the uterine cavity because the gestational week is too small, so it is recommended to review it after one week. Meanwhile, ectopic pregnancy cannot be ruled out, and pregnant women should pay attention to the presence of abdominal pain, and should seek medical attention quickly in case of abdominal pain.