If you have high thyroid levels you might not feel hungry, you may be losing weight, feel agitated and be hyperactive, restless.
With a low thyroid, which I happen to have, it is opposite, you are more prone to eat and eat, you have difficulty to be active, it feels difficult to take an action as you naturally gravitate towards doing nothing. Until my thyroid disease was diagnosed, I thought I was just a lazy person, I had to mentally remind myself that I HAD to get out of my bed, do whatever needed to be done but I felt like staying in bed all day.
Hope it is not thyroid, I have to take my medication for life, just need to check if I need a higher dose once in a while.