There are many reasons for brown discharge in the fifth week of pregnancy, it may be caused by pre-eclampsia, or ectopic pregnancy, endometrial polyps, fibroids or polyps in the cervical canal, cervical erosion, chronic cervicitis, etc. All of these may cause brown discharge. In these cases, it is best to come to the hospital as soon as possible to have a gynecological examination to rule out cervical polyp or cervical erosion, and to have an ultrasound to determine intrauterine pregnancy, and to have a blood test for HCG and progesterone, and if necessary, to use traditional Chinese medicine or proprietary Chinese medicine to actively preserve the pregnancy as soon as possible. If ectopic pregnancy is confirmed and HCG is particularly high, surgical treatment may be required. If intrauterine pregnancy is confirmed and there are symptoms of pre-eclampsia, it is best to take more bed rest, walk as little as possible, actively preserve the pregnancy and review the ultrasound in a week.