Just phoned for the results - apparently my thyroid function us normal.
TSH 0.84, range 0.4 - 4.0
So WTF is going on then? I have a bucket full of symptoms of hypothyroidism, and then my results come in as normal.
What else can make your tongue go scalloped, make you put on weight despite eating habits not changing, make the outer bit of your eyebrows go, make you extremely sensitive to the cold, have extreme exhaustion, joint pains and muscle aches, and have periods every 2 weeks.
The bastard of it is that right now, as of a few days ago, I actually feel a bit more energetic, and have suddenly developed AWFUL insomnia that is keeping me awake until 4.30am. 

WTF is fucking wrong with me??!!
I have a pelvic exam at the GP tomorrow to try to find reasons for the periods every 2-3 weeks. All my other blood tests came back 'normal' too.
The only one that isn't back yet is the thyroid antibodies.
Is it possible for your body to naturally switch between HYPOthyroid and HYPERthyroid?!?!