During pregnancy, hormonal levels undergo significant changes to support fetal development and prepare the body for childbirth. Key hormones include human chorionic gonadotropin (hCG), which supports the corpus luteum; progesterone, which maintains the uterine lining; and estrogen, which promotes fetal growth and increases blood flow to the uterus. Additionally, oxytocin and prolactin are crucial for labor and lactation, respectively.
