This hormone, beside progesterone, is one of the most important ones. oestrogen that comes from the ovaries, the corpus luteum and then from the placenta, makes the uterus grow, develops endometrium, increases blood flow especially in this region and regulates the liberation of other important hormones. oestrogen increases the growth of your breasts and their milk-making machinery. It also makes sure of the development of the organs and systems of your baby.
Oestrogen is responsible for the increase of blood flow to mucous membranes producing stuffy nose, sinus congestion, postnasal drip and headaches. Dermatologically speaking, this increased blood flow results in the famous pregnant “glow”. Along with progesterone, can cause hyperpigmentation such as darkening of the areola-nipple complex and the middle white line in your abdomen (linea alba). The skin of your face may start to look more tanned, producing the chloasma or “mask of pregnancy”, due to the more sensitivity that your skin feels to sunlight.