Your symptoms sounds like herpes simplex
infection, nothing to worry at all, herpes simplex virus can rarely be cured , remain in the nerve root
at dormant stage for years and occasionally reactivated. Other possibilities are fungal infections that are also common, you should not use any irritant to pubic area and try to keep that area dry as much as possible. Anyway at your age screening for cervical cancer
is necessary consult your gynaecologist.