If you have hypothyroidism, then your doctor
is likely treating your condition with levothyroxine. Levothyroxine is the synthetic version of thyroid hormone that is naturally made by the thyroid gland. The thyroid hormone works to increase your metabolism and can counteract some of the symptoms of hypothyroidism which can include feeling cold, dry skin, weight gain, and fatigue. However, the levothyroxine does not result in resolution of symptoms right away. It takes time to build up in your system. In fact, some doctor say that if you miss a few pills you shouldn't have any symptoms and you can catch up by taking all of the missed pills at once. If you are feeling different on a day to day basis, I don't think it has to do with any fluctuations in your thyroid levels. Thyroid function and dosing of levothyroxine is done by your body's TSH level. This is how your doctor will know if your medication needs increased or decreased. I suggest that you schedule an appointment with an endocrinologist
. This is the type of physician that specializes in the thyroid function. He or she can explain in more detail how your thyroid function is monitored and your medication dosed. I hope you feel better.