Ooh, thank you for the link! I'm not sure which parasite it is, all I know is they sometimes look like rolled up red tomato skin and other times they're triangular in shape.
As for the candida problem, I tried taking nystatin, and it worked at first (a long white string came out and my yeast infection started clearing up but the nystatin suddenly stopped having any effect and now it's back stronger than before :/