muscle tightness, poor memory and brain fog, and an overall feverish feeling
These sound too much like die-off symptoms not to be, especially considering the antifungals you’re taking with such a small dose of molybdenum. If you continue to use the 150 mcg pills, take 2 pills the day you read this and increase by one pill each day until you reach 5 pills a day. Remain at that amount until the symptoms I named above have lessened to the point of no longer being a problem. A week after they’ve lessened, start reducing the amount by one pill every three days. If symptoms return, increase the amount again.
I would expect some positive change in symptoms after this, but please keep us posted.