Yeast infection and TTC

My husband and I just started TTC a month ago. I am 5 days away from my fertile window and feel a yeast infection coming on. I know it’s from having a lot of unprotected sex, since my body isn’t used to it. I have very sensitive lady bits. What can I do to prevent this from happening again during this season of trying to conceive? I take probiotics and have boric acid suppositories along with an essential oil feminine spray that help when I feel one coming on, but I would love some pointers on how to prevent them all together.