Recurring vaginal yeast infections

Si

What are some practices I can do to PREVENT them from happening? I had issues with it before pregnancy and now that I’m pregnant it’s like I have one every month 😭 I’ve been tested for everything and it’s all coming back negative so it really is just a yeast infection. I can get it to go away with Monistat and i even got a prescription for oral antifungal and it STILL came back (although it took longer) Probiotics? Certain underwear? Special wipes or soap? Being pregnant I’m not sure what kind of supplements are safe so I’m stuck on what I can do. Any suggestions?