Yogurt is helpful in controling yeast. Not sure why. But it works. And yes, cranberry juice is better than antibiotics. We have cured UTI's with cranberry juice.
When your body has mercury (while fillings are in or during detox), the body's protective response is yeast. Yeast absorbes the mercury and protects. So more mercury, more yeast. You should find the yeast subside once the metal is out.