Yeast Infections/ Vit C connection???

I have recently begun taking some Vitamins etc, in an attempt to control what i believe to be Perimenopausal symptoms. I am feeling MUCH better in many ways. The only drawback seems to be yeast infections.

This is what I am taking

Quest Premium Multi-One Multiple Vitamins and Minerals 1/day
Nutrica Efamol Evening Primrose 500 mg 1/day
Now Zinc 50 mg 1/day
Natural Factors Vit C 1000 mg 1/day

Natural Factors Calcium& Magnesium Plus D with Manganese, Potassium and Zinc 1/evening

Calcium 250 mg
Magnesium 250 mg
Potassium 20 mg
ZInc 5 mg
Manganese 1mg
Vitamin D 3 100u

I have been taking the Multi vitamin all along, with no ill effects and I suspect it is the Vit C that is causing it. Any ideas/suggestions.

I am treating the Yeast Infections with Acidophilus Bifodus and it works well enough...but i would rather NOT get them period.

Looking forward to any input...btw..this was the starting dose for many of these things...with the intent to increase the amounts of Calcium, Vit C and Primrose Oil as i went along. I wanted to give my body a chance to adjust to them, but found the amounts i am taking now work quite well for me.

Shannon