It is not uncommon to feel disturbed and uncomfortable looking back on a past experience that was troubling, uncomfortable, or possibly inappropriate. In your situation, it makes sense that you would feel upset or triggered by remembering this experience with your brother. It's never easy to look back on past events that weren't appropriate. It can be unsettling and unsettling to think about. It's okay to feel how you do and to express your emotions and vent about your feelings. Your emotions are valid and understandable. It might help to reach out to trusted friends or family and seek support for these difficult feelings.🩷