Placental maturity level 2 does not determine how soon the baby will be born; the development of the placenta and the fetus are not completely synchronized. Placental maturity level 2 can occur in the middle to late stages of pregnancy, when the gestational age of the fetus cannot be determined, so it is not possible to determine exactly how soon the birth will occur. Placental maturity increases with the duration of pregnancy, and the placenta is fully mature in late pregnancy, but the timing of fetal birth varies, and it is possible to give birth at any time after 37 weeks of pregnancy. Pregnant women should do prenatal checkups to understand the maturity of the placenta, to avoid the possibility of intrauterine hypoxia of the fetus caused by the aging of the placenta function. When a pregnant woman has redness and regular contractions in late pregnancy, she may be preparing for labor. If there are symptoms such as abdominal pain and redness in late pregnancy, you need to go to the hospital immediately to wait for labor.