since 2002 after a groin hernia surgery ,fatigue, loss of memory, no concentration and other symptoms of hypothroidism i take synthroid for3 yrs gained30 lbs and still gaining iget winded when iwalk for a short distance and sweat for no reason sometimes it is so bad i cant seem to cool off i have a sinking feeling so bad at times my arms and legs feel so heavy all tests come out alright or slightly low all of this has effected my lifestyle i was always energetic, never over 125 lbs now am 160, and could remember everything help