Can Bactrim Be Taken For Vaginal Yeast Infection?

Can bactrim help with Yeast infection/BV? I ve taken diflucan but the discharge is still there. I have another pill but due to some antibiotics that I was given (I haven t started them) I m scared that the yeast will get worse so I m trying to save the last diflucan pill. I was also given doxycycline. Will either antibiotic help?