Is your doctor testing anything besides TSH? If so, please post results and reference ranges (they vary lab to lab and have to come from your own lab report). TSH is a pituitary hormone and an indirect measure of thyroid status. FT3 and FT4 are the actual thyroid hormones and are necessary for a complete thyroid picture.
Is TSH the only thyroid test being done by your doctor? If so, that absolutely doesn't work. TSH is a pituitary hormone that is affected by so many things that at best it is only an indicator, to be considered along with more important indicators such as symptoms, and also levels of the biologically active thyroid hormones, Free T4 and Free T3. You should always be tested for both Free T4 and Free T3, which are not the same as Total T4 and Total T3, Free T3 has been shown to correlate best with hypo symptoms such as those you mention, while Free T4 and TSH does not correlate well at all. In addition, when taking thyroid med, TSH is even less useful as a diagnostic.
Hypo patients often find that their body does not adequately convert the T4 med to T3, resulting in relatively high Free T4 levels, with Free T3 levels that are low in their range. Many members say that symptom relief required Free T4 at the middle of its range, at minimum, and Free T3 in the upper third of its range, or as necessary to relieve symptoms. Symptom relief should be all important, not just test results, and especially not TSH results. So you need to find out if your doctor is going to be willing to treat clinically as described. If not, then you will need to find a good thyroid doctor that will do so.
So if you have test results for Free T4 and Free T3, please post them so we can better assess your status. If not, then you need to get those tested, and always make sure they are tested each time you go in. Also, since hypo patients are frequently too low in the ranges for Vitamin D, B12 and ferritin, those need to be tested also.