I Was Told By My Physician’s Staff Today My Thyroid

I was told by my physician’s staff today my thyroid is just a little bit high. My dr said it was just a little high. Nothing to worry about and no meds needed. Is this hyperthyroidism and is there a natural supplement I can take? From what I’ve read I should have a high metabolism but I d9 not. I’ve put on about 7lbs in the past 6 months. I am 61, weigh about 133,excercise moderately, eat healthy through the week and eat out a couple of t8mes on the weekend. Thanks for info.
Vicki