Background: Stress has both positive and negative impacts. One of the effects of stress is the irregularity of the menstrual cycle. Irregular menstrual cycles are an important indicator of current and potential reproductive health problems in the future. Various previous studies have shown that there is a relationship between stress levels and menstrual cycle irregularities. Methods: This study is a quantitative study, that is observational analytic with cross sectional method using primary data obtained from questionnaires. The population in this study were all female students from a Faculty of Medicine in Surabaya batch of 2019. The sampling technique in this study was non-random sampling, consecutive sampling. The variables in this study are stress levels and menstrual cycles. Results: The results of this study indicate that the majority of respondents are not stressed or normal (75%) and have menstrual cycles within the normal range (71%). The results of the correlation test show a significance value or Sig. (2-tailed) of 0.169, which means that the relationship between the stress level variable and the menstrual cycle is not significant or not significant. Conclusion: There is no significant correlation between stress level and menstrual cycle in medical students in Surabaya. 

menstrual cycle

stress level

medical student