When a blob of mucus like snot comes out of the vagina at 40 weeks’ gestation, it is necessary to be assessed by a doctor, and when it is not accompanied by abdominal pain, you can continue to stay in labor; when it is accompanied by abdominal pain, you can be hospitalized and stay in labor if necessary. At 40 weeks of pregnancy, the fetus has matured, when there is a lump of mucus like snot coming out of the vagina, it suggests that the cervical mucus plug is dislodged, and it is necessary to go to the hospital and be evaluated by the doctor, when there is no abdominal pain and the cervical ripeness is poor, it can continue to wait for the delivery under close monitoring of fetal movement, when there is abdominal pain and the cervical ripeness is good, it is necessary to hospitalize and wait for the delivery. At 40 weeks of pregnancy, you should strictly follow the obstetric examination on time, closely monitor the changes of fetal movement, and under the guidance of the doctor, take a walk, sit on the birthing ball and other exercises to promote the start of labor. When symptoms such as irregular abdominal pain, redness and vaginal discharge occur, you need to go to the hospital and get ready for labor.