Seeing red in late pregnancy but no pain in the stomach can usually be born within 48 to 72 hours, but the pregnant woman’s condition is different, the time used is also different. Redness in late pregnancy is due to the separation of the fetal membranes near the endocervix from the uterine wall there, the rupture of capillaries and a small amount of bleeding, mixing with the mucus in the cervical canal to be discharged, which is a relatively reliable sign that labor is about to begin. Redness is usually preceded by regular uterine contractions. Labor usually starts 24 to 48 hours after the sighting of red, and if labor progresses smoothly after labor has started, it is usually completed within 24 hours, i.e., within 48 to 72 hours after the sighting of red. However, every pregnant woman is different and there are individual differences, so it is not possible to make a complete generalization. When you see red in late pregnancy, you should go to the hospital in time to wait for labor and report any discomfort to your doctor.