Hello dear user. Thank you for asking! I have gone carefully through your concern. You will need regular blood tests to check your thyroid levels. Pease tell me : when was first time that you diagnosis with hypothyroid? In your first chek up TSH was 104 ng/d and after 4 months… Can you tell me after 4 moths that you stop tab your TSH WAS 104???. (Thyrox is usually lifelong) Before my advise I have more questation :Did you have other desease? Are you taking other medicine (interactive wih levothyroxine) Are you after thyroidectomy? You must to know that the most of case :Treatment with levothyroxine is usually lifelong. The normal rang is after 4-6 weeks from treatment with Hormon Replacment Therapy. After 2 months your TSH is 3,6.May I know and the Ft3 and T4 levels? Did you have done thyroid scan?Ultarsound of thyroid glang? You are taking thyrox 50mg/kg and TSH is normal.3,6. Your concerns is that you feel physically imbalanced!?Can you prescrtiption me please how you feel? Are you feeling irregular heartbeats , headache,tremor etc? My advise is to check a blood test (thyroid-stimulating hormone [TSH] test) to make sure you have a normal hormone level. One way to control the hypothyroid and your symptom your doctor may suggest you try the combination therapy of T3/T4 medicine . I suggest to consult with your docter continue to take the tablets/medicine unless your doctor tells you to stop. Hope I was hepfull. Kind Regards Dr,Klodiana Poshi