If the second child is already full-term, seeing red is usually a precursor of labor, even if there is no pain, you should go to the hospital to wait for delivery, most pregnant women will be in labor within 1-2 days, a few pregnant women may be delayed in 1 week later delivery, mainly related to individual differences. Redness in late pregnancy is due to the peeling off of the fetal membranes and uterine wall near the endocervical opening, resulting in capillary rupture, a small amount of bleeding occurs mixed with mucus plugs in the cervical canal and then discharged through the vagina, and its is a more reliable sign that labor is about to begin. Contractions usually occur slightly later in the second trimester than in the first, perhaps 1-2 days before labor, and enter labor relatively quickly. Therefore, even if a full-term second fetus does not have contractions after seeing red, the mother should go to the hospital and wait for labor to begin, which usually occurs in about 1-2 days, with regular contractions leading to delivery of the fetus. In addition, if the amount of vaginal bleeding, more than the amount of menstruation, while the pregnant woman does not have abdominal pain, it is not necessarily red, should be considered late pregnancy bleeding, such as placenta praevia or placental abruption, etc., need to go to the hospital obstetrics consultation.