Hmm.. its my understanding that most of the parasite/candida tests are lousy, I know some are better than others but I didn't even bother to waste my money.
In terms of the symptoms, I was in the exact same boat, and I still can't know for 100% sure whether I had candida but I had all the symptoms of and so I just assumed I did/do (an alternative explanation could be a food or Histamine Intolerance - but those often exist with or because of candida as well).
So if it was me I would just begin treating your candida and parasites.
The Humaworm company is pretty small and their demand is far outstripping their supplies right now I have been told. I just got done with my first round, it wasn't pleasant during but I passed some stuff and feel better now that it is done.