So I think I have a yeast infection

Stacie • Mother to Ben 👦🏽, Bash 👦🏽, and Braxton 👶🏽, 420 enthusiast 🔥💨, lover of life 😍🤘🏾
It itches down there and then when I go to use the bathroom, I feel like I'm peeing fire! 
​And to make things worse, my period is 2 days late and for the cherry on the top, I took a hpt and I got a bfn
​What's going on with my body? Can anyone tell me?