If you are pregnant at 37 weeks and have a little brown discharge from your underpants, consider the possibility of preterm labor, there is no need to be too nervous, you can be hospitalized in time to wait for the birth of the baby, but if the amount of bleeding is more than the amount of menstruation, there may be other conditions such as placenta praevia or placenta previa, etc., you need to go to the hospital as soon as possible. Most of the normal delivery will be preceded by the first red, then regular abdominal pain accompanied by the disappearance of the cervical canal and the process of dilatation of the uterine opening. 37 weeks of full-term pregnancy, a little bit of brown vaginal discharge may be the first sign of labor, if the fetal movement is normal, do not be too nervous, can be hospitalized in a timely manner to rest and observation, and patiently wait for the birth of the baby. If the amount of bleeding exceeds the amount of menstruation or is accompanied by sudden abdominal pain and discomfort, as well as abnormal fetal movement, then it is necessary to go to the hospital in a timely manner, considering that it may be combined with other anomalies such as placenta previa, placental abruption, and so on. It is recommended that pregnant women increase the number of checkups in late pregnancy, and consult a doctor in case of vaginal blood or premature rupture of membranes. Usually, you should pay attention to ensure sufficient sleep, do not be too nervous, and actively wait for the arrival of normal labor.