If you have a 'normal' thyroid TSH test but still have many symptoms of hypothyroid [feeling cold all the time, low temperature, low blood pressure] the problem might be Wilson's[temperature] syndrome, an inability to convert T4 to T3 because the enzyme is not made in sufficent quantities.I believe that systemic/blood candida interferes with this mechanism. If you look it up on the net there are several sites that describe the condition, and lists of Drs in the US [and one in the UK]that treat this.Love and light, Deotima.