Much more important than TSH level is free T3 and free T4. TSH is a pituitary secretion that is a signal to the thyroid glands. It is affected by many variables and does not correlate well at all with hypo symptoms. Free T3 and free T4 are the actual thyroid hormones that cause biological activity. Free T3 is actually four times as potent as free T4 and it correlates best with symptoms. If you haven't been tested for the "Frees" then that would be a good thing to have done. If you will read through this article, then I think you can see the importance of the "Frees", and the need to get them into the upper part of their range to alleviate hypo symtoms.
http://www.hormonerestoration.com/Thyroid.html
Can i take Champix with my synthroid medication ?
I know exactly what you are talking about. My thyroid was removed 3 yrs. ago also, and the synthroid was increased over time, and the pounds kept coming. My daily routine as follows: excercise, diet, and ***** . I may lose 1 or 2 lbs., but then it's back again. I get so mad at times because my doctor has this attitude and thinks the same way that yours does. No matter what I do, It's never good enough. I hope that you have better luck than I do.