What happens next? Well, we still have the gonadoshop releasing hormone that is produced by the hypothalamus and it still stimulates the interior pituitary gland to continue to produce LH as well as FSH. Now, what LH does post Ovulation is it actually forces the remaining component of the follicle to mature into the corpus luteum to produce the corpus luteum. And the Lutonizing hormone stimulates the corpus luteum to produce not only estrogen but another type of hormone known as progesterone. Now, estrogen initiates the thickening of the endometrium but progesterone actually maintains that thickening process. What it also does is it basically inhibits the contraction of the muscle found inside the uterus and it also inhibits the production of secondary follicles.