Thrush and most skin related problems are due to oxydation. Zinc and vitamin E help a lot. Zinc you can find in nuts. You could consider making nut milk/rice milk for your kids (the one we buy on the counter has extra (rice) Sugar in there.
I will come back with the recipe:
For your vaginal itch, insert a clove of garlic (if you do not mind the smell) for your kids too, a garlic solution: boil garlic use it, lukewarm to wash the infected area.