There is evidence of autoimmune thyroid disease -- there may have been a transient silent thyroiditis (inflammation of the gland w/ release of pre-formed hormone). At this point, with normal labs, it is best to monitor -- there is a chance you will become hypothyroid, but it may be months or years before this happens. Would test thyroid function labs at least every 6 months for 1-2 years then annually to keep an eye on things. In terms of symptoms, it sometimes takes 2-3 months after normalization of thyroid status to feel better --- so if the previous hyperthyroidism caused the symptoms, it may take more time to resolve (no medication though is indicated at this time)