PG Diploma in Sexology and Psychosexual Counseling. For More Info WhatsApp- 9604715783/9359863878. At the age of about 8 the anterior pituitary begins secreting gonadotropic hormones, FSH & amp; LH. These act on the ovaries. One of the follicles grows and ovulation takes place on the 14th day (counting from the first day of menstruation). During the growth of the follicle, estrogen is secreted. Following ovulation, the follicle develops into corpus luteum that secretes progesterone hormone. After two weeks, the corpus luteum degenerates. The ovarian hormones, estrogen and progesterone decrease greatly and menstruation begins.