Yeast infection ruining my sex life.

So I’ve been struggling with infection for over a month now & im so tired. I’ve done all the treatments. I’ve been tested for stds. Negative. Always yeast. I waited to have sex for 3 weeks. I finally did & it’s burning red & kind of swollen. I don’t understand what more I can do. I tried taking probiotic, eating yogurt, monistat. Fluconazole multiple times. I give up truly I feel like I’ll never be able to be able to have sex again. All thanks to an antibiotic I took to try to help acne I think it messed me up for good. I wish I never even took it I was just fine. This seriously has me so upset & I feel helpless. 😔