Brown vaginal discharge on day 41 of pregnancy is usually seen in four ways: first, a gynecological examination can look for the presence of cervical polyps. If there are cervical polyps, a little brown vaginal discharge may also occur. The second is the possibility of pre-eclampsia, which is mainly due to normal development on ultrasound, good development of the embryo on blood test, but leakage of the fetus, which is related to the rest of the individual. Third, the possibility of ectopic pregnancy, especially when accompanied by lower abdominal distension and swelling, must be examined by ultrasound to rule out the possibility of ectopic pregnancy. Fourthly, there is a possibility of abnormal miscarriage, that is, embryonic dysplasia. This condition can also be clarified by blood sampling as well as ultrasound examination. If you have brown discharge on the 41st day of pregnancy, it is important to check what the cause is and then treat it accordingly, not to blindly keep the baby.