The candida is a sign that your immune system is damaged. You could have a test done to measure your natural killer cell activity. This is typically depressed in those with candida overgrowth. Keep taking the vitamin D3. Vitamin D is necessary for detoxification. Sensitivity to heat is a typical hypothyroid symptom. You should be taking selenium supplements, perhaps 200-400 mcg a day, as selenium is necessary to convert T4 into the active T3. Tinnitus means you need more B12, magnesium and zinc.

Mercury is naturally gotten rid through the bowel, with little or none leaving through the urine unless you take a chelating agent which causes urinary excretion of mercury.

Try eating plenty of cilantro and see how you react to that. I think cilantro is helping me, as is fighting candida using Now Candida Clear.