As per Fertility Friend:
What is a typical cervical fluid pattern?
Cervical fluid is produced by your cervix as you approach ovulation due to increased estrogen. It flows from the cervix into the vagina where it can easily be observed. Your cervical fluid changes throughout your cycle, increasing in quantity and becoming more clear and stretchy as you get closer to ovulation.
In the most common pattern, cervical fluid starts out dry after your period and then gets sticky, then creamy, then wet and watery, becoming most like eggwhite as you get closer to ovulation. Usually it dries up quickly after ovulation. You may get different types of cervical fluid on the same day. Always record your most fertile cervical fluid to make sure that you do not miss a potentially fertile day.
They also say :
When cervical fluid is scant or absent, it is more important to try to time intercourse for as close to ovulation as possible, since sperm will not be able to survive as long while waiting for the egg to be released.
Hope this helps!!