Thanks for your query.Based on the facts that you have posted it appears that you have what is called as Atrophic Vaginitis
which is common in post menopausal age group.
It is primarily due to deficiency of Hormone (Oestrogen)
Please consult qualified Gynaecologist for clinical examination .She may prescribe you hormonal
cream for local application and hormonal supplements orally.
Please ensure to clean your genitals with anti microbial solution Betadine