Yeast Infections

Help! I’m constantly getting Yeast Infections after my period. It’s been going on for a couple months now every since we’ve been ttc. I’m tired of having to go to the doctors and getting a prescription 🤦🏾‍♀️ I have heavy thick white discharge and constant back pain! I take care of myself and make sure that my vagina are is completely clean at all time! How can I stop this from continuously happening?