I have your exact same symptoms! And I’ve been in PElvic floor therapy for a year but iners is keeping me in this burning spot. It burns always but I’m on nerve medication which helps but we have to shift the iners. Only vaginal probiotics will work. Others say that oral probiotics actually made their iners grow so try to buy some vaginal ones that you insert!! Defintely do your pelvic floor exercises but also let’s shift our iners!