Thanks for query.
From your symptoms and type of discharge it seems that you are having Triconomas vaginalis, a fungal infection
Go for vaginal swab examination.
Apply anti fungal cream or put anti fungal tablet like mycostatin
vaginal in your vagina.
Take oral anti fungal medicine.
Take antihistamine like cetrizine
for local itching.
keep your local part dry,clean and healthy.
ok and bye.