The goal of this randomized controlled trial is to evaluate the effectiveness of a digital psychoeducational intervention for young adults experiencing fertility-related distress following a cancer diagnosis. It will also assess how the intervention supports the development of effective coping strategies and social support networks. The main questions it aims to answer are: Does the digital psychoeducational intervention reduce anxiety and depression severity compared with usual care? Does the digital psychoeducational intervention increase patients' self-efficacy, social support, and coping compared with usual care? Does the digital psychoeducational intervention increase patients' quality of life compared with usual care? Researchers will compare the digital psychoeducational intervention to usual care (standard treatment) to see if the intervention effectively manages psychological problems and improves quality of life. Participants will:Be randomly assigned to either the experimental group or the control group. Attend an initial face-to-face introductory session, followed by four digital psychoeducational modules delivered via a mobile phone application (if assigned to the experimental group). Engage with module content including an e-booklet, video, and quizzes, with a new module opening every two days. Receive standard treatment from healthcare providers, and later receive the psychoeducational materials at the end of the data collection period (if assigned to the control group). Complete a series of validated questionnaires measuring depression, anxiety, coping, self-efficacy, social support, and quality of life at four different time points throughout the study.