Thanks for your query.Based on the facts that you have posted it appears that you have
what is called as Mucocutaneous Genital Candidiasis
This is very common in diabetes
so please get your blood examined to check your sugar levels to rule out diabetes.
In the mean while take anti fungal medicine orally twice along with topical anti fungal Jelly for local application.
Get prescription of these drugs from your family physician.
Please keep proper personal hygiene by cleaning your genitals with warm water twice daily.