I'm 24 years old. I've been struggling with an unstable thyroid condition. When I have tested my thyroid profile in the year 2014 tsh was on the (5.8 hypothyroidism) and I have taken medicine (thyronorm 12.5 mcg) for 1 year (approx.) with the doctor's advise. While I was in the medication tsh level was normal and after that, I have stopped taking the medicine. In the year 2016, i?ve got my thyroid test done and the tsh level was on the lower side (0.03 hyperthyroidism). I have consulted the doctor and advised me to reduce my weight (as I was overweight) and asked me to change my diet plan and he did not suggest any medicine. Later I have not taken care of myself and did not take any medicine for 2 years. In the year 2018, I have got my test done and this time tsh again went to the higher side (8.2) so I have consulted the doctor and he has advised me to use thyronorm 25 mcg for 1 month so I have I have used it for one month and got my tsh test done and this time tsh level was normal. Doctor asked me to continue the same medicine for the next 2 months and I have used the medicine for 2 months and got the test done after 2 months and this time tsh level went to 0.01. I consulted the doctor and asked me to stop using the medicine and to wait for 1 and a half month. After one and a half month (feb-2019), I have done the test again but still tsh level in 0.01. Please suggest to me what I have to do and explain to me about my health condition. As my doctor suggested me to have a thyroid scan and to use medicine for hyperthyroidism later the scan results. I've been doing the gym, workouts and proper diet and I have lost about 20 kgs in 4 months and now bmi is at the correct level.