I Have Constant Vaginal Burning But I Am Convinced It

I have constant vaginal burning but I am convinced it is not a yeast infection or a UTI. I find I get this burning right before my period. My gyno said it could be a change in hormones before my period. I'm also on birth control so that adds to the change in hormones. I tried Vagisil medicated wipes but it only made it worse. My gyno wouldn't prescribe be anything bc she thinks it's temporary. HELP. I am constantly uncomfortable.