Candida can be anywhere, and it's hard to detect on any test. The way to know if you have a problem is to go on a strict candida diet and avoid all the things it feeds off. If you have a problem? You will have a die off /detox effect from teh yeast literally starving to death adn releasing its death toxins into your blood stream, possibly making you feel pretty poorly for a while.

Later, once levels are reduced and the yeast has been cleared out of the system, you should notice improvements. For some, they can be profound.

I would very much doubt you did not have a candida problem, not sure I know how you'd escape it. Anytime a person's immunity is interferred with and/or poisoned, yeast overgrows in the body because it's unable to be held back anymore by a health immunity. Plus heavy metals appear to cause yeast to proliferate also.