thanks for asking few questions *When was first noticed? *Has it increased in size since then? Any recent increase in size? *Do you have any breathing difficulty/ swallowing difficulty or any voice change? *Any history of weight loss/palpitations/ tremors/diarrhea? *Any associated weight gain/ hairloss/ tiredness/ constipation? *Any history of recurrent fever / thyroid pain/ eye pain / bulging eye ball/ tiredness? *Periods- is it regular? *How is your quality of life? *Any family history of thyroid disease/ goiter or thyroid malignancy? *Are you diabetic/ hypertensive? *Do you have raised cholesterol? first of all you need to be a little clear as to what test was low and what medication you were put on because there are 3 test with thyroid TSH T3 T4 thyroid problems occur with combination of these tests if TSH low T3 and T4 high- it s thyrotoxicosis if TSH high T3 and T4 low-its hypothyroidism if TSH high only - hypothyroidism treatment for hypothyroidism is only required if TSH is more than 10 unless in pregnancy where the TSH should be less than 2.5 if TSH is low only it s subclinical toxicity treatment for thyrotoxicosis with antithyroid drugs is only required when thyrotoxicosis persists for more than 6 weeks with long duration symptoms or unless proven earlier with uptake scan.