I've treated yeast infection severally with fluconazole antibiotics buy it keeps coming back even when i don't have sex and sometimes after my mensuration, what's wrong?

Yeast treatment: Maybe it isn't a yeast infection. The main vaginal yeast symptoms are itching and only scant discharge. If you have more discharge or odor, it's probably not yeast. Also, about 10% of cases are due to types of candida that don't respond to fluconazole or other "azole" drugs; alternate treatment is needed. See your doctor to confirm the diagnosis and get proper treatment. Good luck.