16 weeks pregnant umbilical cord around the neck for two weeks may be due to the umbilical cord is too long, the fetus is small, too much amniotic fluid or frequent fetal movement and other factors, generally the umbilical cord around the neck if the loose words are not serious, such as the umbilical cord around the neck is tight relatively more serious. During pregnancy, umbilical cord around the neck is relatively common, umbilical cord around the neck two weeks if the umbilical cord around the neck is loose, the umbilical cord is longer, generally will not jeopardize the health of the fetus, is not serious, pregnant women can be counted through the fetal movement to observe to understand the safety and security of the fetus in the uterine cavity. Most of the umbilical cord can be detached by itself. However, if the umbilical cord is too tight, it will be harmful. When the umbilical cord is too tight, the umbilical cord may be compressed during contractions, which may lead to lack of oxygen for the fetus, abnormal fetal movement and fetal heartbeat, and even lead to intrauterine distress and fetal death. If the umbilical cord is found to be wrapped around the neck for two weeks after pregnancy, you should avoid being too nervous, closely observe the fetal movement and fetal heart, and go to the hospital in time if there is any abnormality.