How many ovulations does a woman have at a time?

Fertility age women only row eggs once a month, and each ovulation only row one, this is the majority of women's normal physiological phenomenon. After the menstrual clean, follicle growth and development speed is 1.5-2mm per day, when entering the ovulation period, if it is around the 14th day of menstruation, follicles basically reach the dominant state, and then in the 16th day of menstruation, will rupture and discharge eggs, this is a normal physiological phenomenon. However, if women in the case of ovulation promotion treatment, often in clinical B-ultrasound examination, will find that there are multiple follicle growth and development, so in clinical ovulation promotion treatment of women, pregnant twins or multiple births will be relatively likely, mainly because ovulation promotion treatment leads to multiple follicle growth and development and discharge.