In the US I think the TSH range for normal was changed in 2003 from 0.5 -5.0 to 0.3 to 3.0. In the UK high TSH changed in 2006 from >5 to >10, in Australia I read it's >3.5, I don't know about Canada.
So in different countries with your TSH you would be treated differently.
In the UK I know there are a lot of people who don't agree with the change to >10. I think it's crazy too. The reason the US lowered it was:
Until November 2002, doctors had relied on a normal TSH level ranging from 0.5 to 5.0 to diagnose and treat patients with a thyroid disorder who tested outside the boundaries of that range5 . Now AACE encourages doctors to consider treatment for patients who test outside the boundaries of a narrower margin based on a target TSH level of 0.3 to 3.04. AACE believes the new range will result in proper diagnosis for millions of Americans who suffer from a mild thyroid disorder, but have gone untreated until now.
I think your doctor should treat your symptoms not just rely on the TSH blood test results. I'm glad you're getting other tests too. You may have something else wrong with you but if you're doctor doesn't find anything else then I suggest you ask for a "theraputic trial" of thyroid treatment to see if it helps.