If the girl did not have her period and got bleeding on her own, this situation may be a local vaginal mucosa damage caused by carelessness, and if it is accompanied by pain, it does not exclude the hymen rupture. If there is no discomfort and symptoms, it may be menstruation, so you can continue to observe. Because the age of the girl is relatively young, there is usually no big problem, so pay attention to local hygiene and continue to observe. If there is more bleeding or other uncomfortable sensations and symptoms, such as local itching and pain, you can see a doctor for examination. Symptomatic treatment measures can be given, such as the choice of antibiotic drugs to prevent infection, bleeding more can also be given to stop bleeding drugs, pay attention to mental relaxation, avoid eating spicy food.