Hello Geeta,
Welcome to our board. Please take some time to "look around" my main website (Home tab on top of this forum) and my blog. You may find more information there that might help you on your journey.
You mentioned fat in the diet... you might want to first look into the coconut oil info that has been posted before - here's a link:
http://www.thyroid-info.com/articles/fifecoconut.htmHave you considered a natural doctor? Many have found more help that way. Also, have you heard of the natural dessicated thyroid supplements which tend to help boost your energy due to the added components of T3 and other natural components of the thyroid. You can read about that on my home page too.
Hope some of the website helps you find better care.

Mo