Cervical fluid is a fluid produced by the cervix, the lower part of the uterus that connects to the vagina. It changes in consistency and amount throughout the menstrual cycle, and can be used as a natural method of birth control known as the cervical mucus method or ovulation method. Checking your cervical fluid can help you identify your fertile window, the time during which you are most likely to conceive.
The appearance of cervical fluid varies depending on the stage of the menstrual cycle. In the early follicular phase, which begins after menstruation, cervical fluid is usually scant and sticky. As you approach ovulation, cervical fluid becomes more abundant, stretchy, and clear. This is known as “egg white cervical fluid” and indicates that you are in your fertile window. After ovulation, cervical fluid becomes thicker and cloudier, and may contain some blood. This is known as the luteal phase.
