Free T3 and Free T4 would be more helpful in addition to the TSH to give a better picture as well as at least once to run antibodies.
is low - total? Were any other testosterone
tests run? Were any other androgen tests run - like bio-available testosterone, estrogen, LH, FSH, dhea-sulfate or SHBG?
Were any tests run on your heart to determine the skipped beats? Is that a perception, or have you worn a halter monitor to see how things are?