Hello - 36 year old female that had a TT at age 25 (papillary cancer). Was on Synthroid .136 for nine years then, suddenly, TSH started fluctuating almost weekly. 4 weeks ago TSH was at .75, two weeks ago I was at 4.1 and today I found out I'm at .124. WHAT GIVES? Does anyone have any suggestion about what might be going on? For those you that have dealt with fluctuations, you know how fun all the symptoms are that come and go with each of these "shifts". Currently? Heart palpitations and tremors. Any help would be appreciated, thanks for listening!