Childbirth is an exciting time in life, how to spend it safely? It is best for pregnant women to have more knowledge reserves to help themselves prepare physically and mentally for the arrival of new life. Seeing redness, water breaking, regular uterine contractions, fetal head entering the pelvis, cephalopelvic disproportion, labor, dystocia, premature delivery, uterine atony, fetal distress, cesarean section, episiotomy, fetal head suction, miscarriage. Keyword 1: See red. Before labor, due to irregular uterine contractions affecting the cervix, the fetal membranes near the internal cervical opening are separated from the uterine wall, causing capillaries to rupture, cervical mucus plugs to fall off, and blood mixed with cervical mucus to flow out of the vagina.