Cervical mucous

Cervical Mucus: is a fluid secreted by the cervix, the production of which is stimulated by the hormone estrogen. Throughout your menstrual cycle, the amount and quality of cervical mucus that is produced fluctuates, and by observing these changes you can begin to predict the most fertile days in your cycle. As you approach ovulation, your estrogen levels begin to surge, which causes your cervix to secrete more cervical mucus that is of a so-called “fertile quality”