TSH with Reflex FT4 levels, standard range:0.35-4.94. Level on 12/2/11-6.12, 6/1/12-3.11, 12/1/12-6.15. Regular TSH on 3/19/13 around 5.65. On Weight Watchers, had lost 50#, now since 8/12 have gained back 13.4#. On 2/8/13 weigh in I gained 4.4# without changes from previous week when I lost 2 lbs. What is going on? Does my Synthroid need to be increased? I m VERY frustrated because no matter what I do or Don t do I gain weight. Also experiencing extreme coldness especially in my feet, increased constipation & worsening of my depression . HELP!!