Fertility problems are par for the course when you have PCOS. Ask any woman struggling with this unpleasant disorder and they will share their painful stories. Progesterone is supposed to work hand-in-hand with estrogen to encourage our ovaries to do their thing each month and create and release happy, little eggs just waiting to be fertilized. PCOS causes low progesterone levels, throwing a monkey wrench into our baby-making plans. This incredible oil is packs twice the punch of most estrogen creams. When applied as directed, it encourages progesterone levels to return to normal, boosting your chances for regular ovulation.