When is the ovulation period for women ovulating for a few days

Ovulation period is generally about 10 days, if a woman's menstrual cycle is 28 days to 30 days per month, that ovulation period is generally in the middle of the menstrual cycle, about 10 days. Ovulation day is generally in the first 14 days of the next menstrual cycle, from the first five days to the last four days of ovulation. Due to hormone secretion in the body and personal constitution, the process of follicle development may mature earlier, ovulation is earlier. If the body's estrogen or progesterone secretion is insufficient, resulting in follicle can not develop normally, may cause unable to ovulation, or show ovulation delay phenomenon, specific ovulation day to do B ultrasound examination, ovulation test paper, basal temperature measurement and other methods to speculate.