You have hypothyroidism.
In Indians, the most common cause is Hashimoto’s thyroiditis, which is an autoimmune condition. It requires lifelong
thyroid hormone supplementation, but don’t worry — it can be very well controlled with regular medication.
Please start Tab Thyroxine 100 mcg ( assuming your weight to be around 60 kgs based on your height ) once daily on an empty stomach in the morning.
Repeat
TSH, free T3, and free T4 after six weeks of starting the medication. Based on those results, we can adjust the dose if needed.
After that, these tests should be repeated every six months to monitor your thyroid function.
Next Steps
Medication and follow up