Ovulation does not always result in a stretched leucorrhea. An objective indicator in monitoring ovulation is to perform ultrasound monitoring to observe the gradual growth of the follicles, but sometimes there are no conditions or continuous ultrasound monitoring is not possible. Usually the amount of leukorrhea increases near the time of ovulation and the degree of leukorrhea filamentation increases, similar to snot. In some women, the feeling of ovulation is obvious and the straining of the leucorrhea is good, which may indicate that ovulation is imminent. Monitoring at this time will reveal the presence of a large follicle and an equally good endometrial condition, but in some patients, especially those with vaginitis or cervical erosion, it is not possible to have a well-stretched leucorrhea. In such patients, the status of the leucorrhoea is always poor and therefore the leucorrhoea is only used as one of the reference criteria for ovulation.