Your thyroid is working normally if your temperature is between 36.5 and 36.8.
In case that your temperature is below 36.5, then you are suffering from a reduced work of the thyroid gland (hypothyroidism). Keep in mind that depression, lack of energy, fatigue, infections, chronic headaches, lack of memory and concentration and hair loss are symptoms of hypothyroidism.
If your temperature is higher than 36.8, you are suffering from an accelerating work of the thyroid gland (hyperthyroidism) or you are having an infection in the body.
In order to get accurate results you need to do this test three days in a row.
In case you find out that your temperature is above or below the normal range, consult your doctor immediately.