I don't know what to do 🙃

Every time me and my SO have sex, I start having extreme pain... I even have pain when he just uses his fingers! So we tried using some lubricants, but they always burn me... Could there be something wrong with me, down there? And I also bleed a lot... I've been checked for STI's and UTI's and was treated for a bacterial infection, but it didn't stop the pain or bleeding.