Abstract: This article develops “menstrual methodologies” for ungendering menstruation and attending to the chronic pain and dysphoria present in menstrual embodiment. Specifically, it unfolds from the experiences of a nonbinary person with undiagnosed endometriosis through developing a series of menstrual methodologies, including ungendering menstruation; thinking with pain through crip time, crankiness, and autoethnography; and a justice-based approach to menstruation; followed by an application of these methodologies to a recent case study. Following on an autobiographical prelude, I begin with an introduction to menstrual methodologies and next outline each one. Menstrual methodologies, I argue, provide a toolkit not only for those who study menstruation and menstruators but for researchers across disciplines who are interested in questions of gender, embodiment, pain, medical science, justice, and disability.