Lab Results from Thyroid Check

Hello Friends. I recently got my lab results back after asking my doctor to check my thyroid. He recommended full blood work since it had been over 3 years since my last physical. Everything came back normal, but Free T4 was at the highest end of the acceptable spectrum and TSH was at the very low end of the spectrum. My doctor insisted that I have no hyperthyroidism and that all the symptoms I've experienced for most of my life (since I was about 15) are simply due to "my personality"

Is it possible I have low levels of TSH and high levels of Free T4 as a result of over-active thyroid but technically the reading falls within the established "guidelines"? everybody's metabolism is different right?