How long is the cervix normal?

The cervix is located in the upper part of the uterus and connected to the uterus, and the lower end is deep into the vagina. The length of the cervix is different during pregnancy and non-pregnancy. In the absence of pregnancy, the length of the cervix is about 2.5-3cm. During pregnancy, the length of the cervix will change with different gestational weeks. Generally, the length will be greater than 3.5cm after 4 months of pregnancy. After 6 months, the length of the cervix is greater than 2.5cm. If the cervix is shorter than 2.4cm during pregnancy, consider that it has something to do with poor cervical mechanism, which is easy to lead to premature abortion. Pay attention to hospital examination and try to stay in bed to protect the fetus.