Hveragerthi gives some very good advice. I don't think it is likely that silver is causing additional problems and it is possible that you are having a bit of Herx reaction due to yeast die-off that is causing your fatigue. As Hveragerthi said, be sure to get pure cranberry juice and not the common cranberry cocktail beverages. Another suggestion that is often very effective against bladder infections and keeps the kidneys cleansed as well is to eat plenty of watermelon. Two more are parsley and celery, though my favorites are watermelon and the pure cranberry juice.