During a mid-pregnancy ultrasound, it is sometimes indicated by the presence of a U-shaped or W-shaped notch behind the fetus's neck that the fetus may have the umbilical cord wrapped around its neck. During pregnancy, it is perfectly normal for the umbilical cord to wrap around the neck, and it generally does not affect the fetus or pose any danger. The length of the umbilical cord during pregnancy is approximately 30 to 80 centimeters, which is quite long relative to the size of the uterine cavity. Hence, many umbilical cords have excess length that can wrap around the neck or limbs of the fetus, leading to the umbilical cord being coiled around the neck or limbs. However, current research indicates that whether the umbilical cord is wrapped around the neck or limbs once or twice, it does not affect the fetus. It does not cause intrauterine hypoxia or affect the growth and development of the fetus, nor does it influence the mode of delivery. A natural childbirth can still be an entirely viable option.