The cervical os is the small opening at each end of the cervix. During ovulation, the cervical os opens to let sperm enter the uterus. Cervical stenosis is when the cervical os becomes too narrow or ...

A normal colposcopy result means a person has no cervical cancer cells, including precancerous ones. Abnormal results may indicate a person has cancerous or precancerous cells in their cervix.

The cervix changes in early pregnancy and throughout the menstrual cycle. Here's how to check your cervix for pregnancy.