By the end of pregnancy, if a pregnant woman’s cervical canal doesn’t subside, consider the following: the first, related to the week of pregnancy. Most pregnant women don’t have an official episode until around 39 weeks, and it’s normal to have an episode before 41 weeks. Before this time period the pregnancy week is immature and the condition of the cervix is not ripe, the cervical canal will be slow to subside. Secondly, if the concentration of contractin receptors in the pregnant woman’s body does not reach a certain level in the late stages of pregnancy, and contractions are not induced, the cervical conditions will be slow to mature, and it will take longer for the cervical canal to subside. Thirdly, if the pregnant woman has previously undergone surgery on the cervix, such as LEEP knife or microwave of the cervix, etc., which affects the texture of the cervix, this condition will also lead to the cervical canal not subsiding.