Progesterone is one of the most important hormones in a woman’s metabolism and fertility. It is produced by the ovaries following ovulation during a normal menstrual cycle but when a woman is pregnant the placenta takes over responsibility for production. Its main roles consist of preparing the endometrium (internal layer of the uterus) for implanting a fertilised ovum and sustaining pregnancies.  It also plays an important role when a woman is breastfeeding because it helps to prepare the mammary glands for milk production. […]