Had a total thyroidectomy about 6 weeks ago, still trying to get my Synthrid adjusted. been dealing with extreme tiredness and anxiety attacks. anyone else out there experiencing the same symptoms? and any suggestions as to how to cope with this stuff. Am taking lorazepam for the anxiety attacks, but they make me extremely tired. I have absolutely no energy. Went on zoloft for awhile(too many suicide thoughts) so quit taking that, but the day to day other symptoms are really getting me dow.