TSH being high suggests a sluggish thyroid. Several medicines including amiodarone, lithium, interferon and others may cause this. Repeat test in 6 weeks (sooner if the tsh was very high -- like >10) - if still high -- consider treatment.
If your TSH is high,then you need to go have it checked out and treated if needed. Make sure FT-3 and FT-4 is also checked with the TSH. If the FT-3 and FT-4 show possible autoimmune then have all five antibodies done to confirm autoimmune.