Welcome to HCM,
It seems that you are having Trichomonous Vaginalis.
Apart from local application of cream and suppositories, go for oral anti fungal tablet, like Flucanozole 150 mg once in a week for 4 weeks.
For itching you may take Cetrizine
or Levo cetrizine once a day.
Keep local part clean and healthy.
Wait for report and go accordingly afterwards.
Ok and bye.