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 ...

Cervical ectropion is a condition in which cells inside the cervix develop outside it and form a red, inflamed patch. It can cause irregular bleeding and pain after sex. Cervical ectropion, or ...