I sure wouldn't make a 6 hour drive for a thyroid ultrasound. What have those docs done for you so far? Lots of drugs. What about that other doc, the naturopath? He sounded cool:) Wouldn't it be easier to pick one for guidance, rather than two or three...? I must confess, I am confused.
Why don't you take a shorter drive to a lake, the seaside, or a waterfall? Bring a picnic lunch. That will make you feel better.
I really don't know diddly squat about western medicine, so don't listen to me. All I know is to avoid, at all costs. Get a diagnosis if that will make you feel better...but, reject any offered treatment.
You must be SO frustrated, I really feel for you, but you have to realize that the power to heal lies within...
Are you getting support from your family and friends at all or do they think you're whacked?
*edit* I don't know what your diet is like, but I think that Newport brought up a really important point with this post re: NUTRITION:
I dunno why I thought you should see that.... :)