how does sperm get through the cervix
Fertile cervical fluid provides channels for sperm to more easily swim through the cervix and uterus and get to the fallopian tubes (another reason why it's crucial to know when you're producing fertile cervical fluid). Unlike the vagina, cervix, and uterus, the fallopian tubes don't treat sperm as hostile intruders. If they can make it past the uterus into the fallopian tubes using fertile cervical fluid channels, they can live there, waiting for the release of an egg, for up to five days.