So I think I have a yeast infection. It started itching down there Thursday and I took a pill prescribed by my doctor. It didn’t help so I bought OTC medicine (the ones you stick up your vagina and put the cream in) I tried this twice and it feels like my vagina is literally on fire!!!! I washed it out and the itching is so intense and the burning is so intense I can’t handle it anymore! How long do yeast infections last?! And I have never had one before, do you guys know any causes? Just so frustrated.