Thanks for query.
From your history and symptoms it seems that you might be having fungal infection
on your vagina and on the thigh.
Apply anti fungal cream or lotion like Tinaderm or multifungin on the affected part.
Take oral tablet Flucanozole ( Fole 150 ), once in a week for 4 weeks.
keep local part dry, clean and healthy.
Wear cotton clothes if possible.
Ok and bye.