PLease be careful. I have been on a suppression therapy dose of s...

PLease be careful. I have been on a suppression therapy dose of synthroid for over 8 yrs. I had thyroid cancer and my endocrinologist said I needed to keep my tsh between .3-5.6. For the last yr I have been feeling awful. My heart rate was arnd 145, I had shortness of breath, muscle aches, hair falling out, could barely eat but I gained about 30 lbs because I was swelling up from edima. I had almost every symptom of being hyperthyroid. My endo said I ran on high test!! I thought I was going crazy. I was on 2mcgs of synthroid. My tsh level became .009 and then became non-exsistent(.oooo) I now have dialated cardiomyopathy, and congestive heart failure. So if you are not on the correct dose you can have very serious side effects. Make sure your levels are checked on a regular basis. If you are not feeling right make sure someone , like a dr listens to you and hears your symptoms. I had repeated ly told my dr how I was feeling and he said I needed to be suppressed. to prevent cancer returning, well after almost dying from heart failure how suppressed should someone be????? Now My entire live is suppressed....