Just incase you do use the home remedy that works wonders... Do it at bedtime so you don't have to taste garlic all day.
Code name yeast infection. Just an imbalance. I use whole garlic cloves. I slit a couple of lines in the clove and stick it right in the vagina. Some thread it for easy removal. Kind of like a garlic tampon. Lol. Depending on how bad it get, I may use this method for 3/4 days. I don't recommend this because I'm not a doctor. Your doc can prescribe you something to fix the problem.
Lots of reasons...stress can be one of them. Take Candex inner health