Empirical data from the past 50 years have illuminated some of the factors that influence pregnancy decision-making. Yet, formal models of pregnancy decision-making are uncommon and rarely incorporate cultural perspectives. In order to address this gap in the literature, we propose the Pregnancy Decision-Making Model (PDMM), a comprehensive model of the factors that are likely to affect pregnancy decisions in the context of unintended pregnancy, with special attention to relational and intersectional components of pregnancy decisions. The PDMM begins with three primary Evaluation factors: Evaluation of Capital, Evaluation of Values, and Evaluation of Narratives. Barriers to Access are proposed to be a key factor in limiting agency and autonomy and determining pregnancy outcomes. Social Influences are also hypothesized to influence Evaluation factors and their relationship with outcome variables, which include the Pregnancy Outcome, Decisional Certainty, and Decisional Satisfaction. As the PDMM is designed to be flexible in its prediction of a variety of outcomes, we consider a number of possible permutations of the model. Finally, we discuss the utility of the PDMM for inspiring future research, as well as the practical implications of the model.