It is not normal to have vulvar pain when you have your period. Vulvar pain is often caused by localized inflammation of the vulvar skin or mucous membranes. In the menstrual period, the body’s resistance is down, every day with a sanitary napkin body temperature can reach more than 30 degrees, in this case is likely to cause local bacterial infection and cause local inflammation, so there will be pain. It is recommended that during the menstrual period, sanitary napkins must be changed frequently, and do not wear tight pants to ensure good local ventilation. When choosing sanitary napkins, it is best to use cotton sanitary napkins, do not use mesh sanitary napkins. Mesh sanitary napkins are not well ventilated, which often leads to local bacterial reproduction and causes local inflammation. Therefore, it is recommended to pay attention to local hygiene during menstruation and wash the vulva with water twice a day. If there is inflammation and pain in the vulva, it is recommended to use 10% of the cleanser to wash 2-3 times a day. Then, erythromycin ointment can be applied locally for treatment.