help pls CHRONIC YI

i’m 17 and i have chronic yeast infections... i have had one EVERY month since October 2018. i have tried everything in the book. i wear lose clothing, i wash and pee after sex, i try and avoid sweets, etc. i have been using the 3 day treatments along with medicine the doctor prescribes me but they always come back. i am sick of the discomfort and pain they give me. i just want to feel normal again and not have any. if anyone has any tips or tricks they use pls comment.