So far (and I say "so far" because the odds seem to indicate that I'll have a thyroid problem eventually), my only thyroid experience was back in 2004. I was in the middle of buying a condo at the time. I went for a physical and the doctor thought she felt a nodule on my thyroid. I completely freaked out, assuming the worst. (Immediately afterwards I met with my realtor, who had to calm me down, which is why I remember that I was buying my condo at the time. We met at the realtor's house, which was beautifully decorated.) A week or so later I went for an ultrasound and it turned out to be nothing.
So I can't give you much advice, but I totally sympathize re: the stress of going through the tests. I'm sure there are folks here who can give you more concrete advice.
I hope it all goes well. p.s. You've been missed!