Chronic yeast infection/bv

So I have been off of my bc since the second week of March (well over 6 months). 2 weeks after I stopped the pill I got a yeast infection which then turned into bv. I have been to 3 doctors and my current ob is a specialist. It happens EVERY month right after my cycle or around ovulation which interrupts my husband and I ttc. I have been tested for every std and everything came back fine. I've had an ultrasound and exams and the doctor can only tell me that my pH balance is (was) off and so I tried a baking soda douche. I've been on medicine after medicine. He put me on a 6 month suppression of Diflucan which I got filled but am not taking 2 times a week like prescribed because I'm ttc and I don't want that in my system. I need HELP because it's back again and I'm in pure misery!!! Someone anyone had these issues?? Almost 9 months of these reoccurring infections and I am losing my mind!