What Causes Recurring Yeast Infections In Vagina, Mouth And Throat?

i have extreme lowered immune system from active Hep .C .I get Yeast infections all over ,vaginal mouth and throut .My throut will get so full it starts to close up making it harder and harder to swallow .When it happened a few years ago A throat spec. Gave me 10 oral pills .Have new Dr. Do not want to be sent to spec. again .Do you know what the name of the pills are called É Or another to clear it up for now É