I am 75 years old,and on Levothyroxin since 2004.Does raised to 125 mcg in2010,04/21/2012 went to 137 mcg,10/08/2012 to 150mcg,been on that dose since.I have become very emotional,tired,stressful,gained a lot of weight an in active.My TSH readings from year to year physical,go from high high normal to low low normal my NP can not give me any answers to my questions