Pleas read my post to "Q: confusing symptoms - criswatk 03/08/2006 ". I think it might apply to you too.
http://www.4woman.gov/faq/graves.htm
Graves is overactive throid. Check out this link for more info.
I THOUGHT GRAVES WAS WHEN TSH WAS VERY LOW?
MY NURSE CALLED AND DOUBLES MY THYROID MEDS
THAT HAS NEVER HAPPENED IN LAST 6 YRS
I GUEES THATS ALL DOC IS DOING UNTIL HE GETS BACK IN TWO WEEKS
I AM STILL CONCERNED
You may have Graves Disease. In most cases the thyroid either has to be treated with radiation, or removed.