Redness at 39 weeks of pregnancy may be an indication of preterm labor, which means that the pregnant woman will soon go into labor. If the vaginal bleeding is relatively heavy and the amount reaches or exceeds the amount of menstruation, it is also considered pathological prenatal bleeding. Within 1-2 days before labor starts, the fetal membranes near the endocervix separate from the uterine wall there and the blood vessels rupture, causing a small amount of bleeding that mixes with the mucus in the cervical canal and is discharged as light red mucus, called redness, which is a reliable sign that labor is about to start. The common causes of pathological prenatal bleeding are placenta praevia or placental abruption. When there is excessive vaginal bleeding, you should go to the hospital as soon as possible for examination to rule out uterine and vaginal diseases and then treat them accordingly. When redness appears at 39 weeks of pregnancy, pay attention to the presence of vaginal fluid. If vaginal fluid is present, hospitalization for labor must be performed because premature rupture of fetal membranes may cause intrauterine infection. If a transwoman experiences redness at 39 weeks of pregnancy, it is recommended to be hospitalized for observation because labor is faster in transwomen. When a pregnant woman has irregular contractions with redness, it is recommended to go to the hospital for an internal examination to note whether the cervical opening has opened. If the cervical canal has disappeared and the opening of the uterus is gradually opening up, hospitalization is recommended to wait for delivery. If the cervical canal is long, the cervix is firm, the opening of the uterus is not open, and there is only redness, the pregnant woman can also wait for delivery at home by herself. If the fetal movement is significantly reduced or particularly frequent, you should go to the hospital immediately. In addition, after seeing red, pay attention to the cleanliness of the vulva, you can use water or iodine volts to wash the vulva to avoid vaginitis.