Dreams involving loved ones in distress can be quite unsettling. In your dream, the image of your girlfriend yelling for help while you struggle to find the right door may symbolize feelings of anxiety or helplessness in your waking life, particularly regarding your relationship.
The room could represent a part of her life or emotions that you feel disconnected from or unable to access. The multiple doors might indicate that there are many aspects of your relationship or her feelings that you are trying to understand, but you feel overwhelmed or uncertain about how to approach them.
This dream may be urging you to communicate more openly with your girlfriend. Consider discussing any concerns or feelings you have, as this can help strengthen your connection and alleviate feelings of helplessness. It might also be worth reflecting on any current stressors in your life that could be contributing to this dream.