Suggest Remedy For Itchy Vaginal Hole And Burning Clitoris

My vagina hole itches. And I had two red lines which were inflamed and they were burning. And when I finger myself it hurts. It burns and hurts and my holes itches very much. And my clitoris hurts when I finger myself. I m not sure if I have an Sti. I m not even sure how an Sti spreads. My partner does not have an Sti or std. I know he doesn t. I even tried out vagisil and Vaseline and yogurt. The Vaseline kind of took away the redness but after that I got pain and the itching increased.and I wear thongs