Recurring fungal infection every month.

Hie doctor. I will be quick with my questions. 1) can anti depressants and mood disorder medicine cause vaginal fungal yeast infection in future and that too on regular basis?. 2) it's been almost an year, I have no abdominal pain, no redness, no swelling, itching at times and not every time when I have yeast infection (outer skin scaling like white dry skin).my infection keeps coming back  every alternate month with or without itch. 3) it happens anytime of month book h during period and non period days. 4) I used suppository, antibiotic and ointment as said by good gynae and by good I mean really good. But it keeps coming back. Relief for a month and again cycle repeats. 5) I eat sugar but normal. Can sugar also cause this. I am not a diabetic with no family history in any of the above mentioned things. Please reply I am fed up with this now. But no lab test done. I am damned scared of tests.