This is the other mother of pregnancy hormones. Produced by the same structures like the ones that produce oestrogen, it has similar functions such as the placenta and endometrium maintenance, and breasts growth. It also makes sure of the smooth muscle of the uterus expansion for your baby to grow healthy. However, this process produces many gastrointestinal discomforts. Progesterone helps to soften cartilage, loosening joints and ligaments, preparing for labour. Produces gums swelling and bleeding, and acne.