It seems you developed minor inflammation of the hair follicle at the labia. Our hair are quite coarse a this area and due to hygiene issues it can get inflamed any time. The pain is usual finding when it is quite tensed. The same happened in you. During healing phase the pain can persist for mutiple of weeks due minor injury
to free nerve
endings which perceives pain sensation. SO do not worry it will be alright. For the time being period you can take paracetamol
as and when required basis.