The fertile period is also known as the risk period and the ovulation period. Since the eggs are released at this time, intercourse without contraception can easily lead to pregnancy, which is why it is called the fertile period. During ovulation, the leucorrhea is like water, because the ovaries secrete a lot of estrogen and no progesterone is discharged during ovulation, so the high level of estrogen stimulation will lead to increased vaginal discharge and watery or egg-white-like stretched leucorrhea, which is a physiological sign that ovulation is about to occur. This is a physiological sign that ovulation is about to occur. Therefore, women who are preparing for pregnancy can arrange intercourse to prepare for pregnancy after the appearance of this kind of leucorrhea to have a higher chance of conception. If a woman has watery leucorrhea along with itchy or unpleasant odor of the vulva, it may be caused by vaginitis.