Progesterone can be given to women at risk for preterm birth, and is advocated by many guidelines as progesterone has been shown to markedly decrease preterm birth, death in newborns, and disability. However, not all eligible women are currently receiving this medication. Thus, there is an urgent need to improve prevention of preterm birth with progesterone. In response to the low number of women receiving this medication, the investigators have designed a potential method to increase progesterone use.