Congrats! Good job
My mom is also hypothyroid and I know how hard it is for her to be in shape...
If I weren't so lazy for sports I'd do that too, but I just hate the gym... I love swimming though so now in the Summer I go swimming at least 3 times a week. I want to keep it like that after the Summer, when I rent a room in October the first thing I'll do will be investigate where the heated swimming pool is
Oh, if you feel so tired sometimes and you think it's sugar maybe fruit can help, grapes, bananas and cherries contain a lot of sugar...