BACKGROUND: Menstrual pain can significantly impact adolescents' well-being and functioning. Despite the prevalence of adolescent menstrual pain, information about adolescents' experiences seeking treatment is limited. OBJECTIVES: We examined retrospective reports of help-seeking in adolescence among menstruators to better understand perceptions and experiences of interacting with the healthcare system due to menstrual pain. DESIGN: This study used an embedded mixed-methods design in which the qualitative and quantitative data were collected concurrently. METHODS: Young adults aged 18-25 who experienced menstrual pain in adolescence completed an online, mixed-methods survey of help-seeking experiences. Responses were analyzed using descriptive statistics and reflexive thematic analysis. RESULTS: Across participants ( CONCLUSION: Participants perceived that their menstrual pain-related treatment needs were unmet in adolescence, despite being offered treatments that align with treatment guidelines for adolescent menstrual pain. Findings suggest that improving explanations about treatment provided to youth, along with improving communication and menstrual education, may lead to more optimal help-seeking experiences among adolescents.