What Happens During Menopause Hormones. Generally, it doesn’t happen suddenly. What happens during menopause and perimenopause with your reproductive hormones.
What happens to estrogen during menopause? Eventually, you are no longer able to become pregnant. Throughout the course of your menstrual cycle, these hormones are in perfect balance, first oestrogen rising in the weeks leading up to ovulation, then progesterone taking over until your period arrives.