The rest of the thyroid panels:
fT3: 5.4 pmol/L(2.6-6)
fT4: 16.8 pmol/L (9-19)
RT3: 621 pmol (140-540)
TSH:1.8 mU/L (0.4-3.5}
Waking temp is 36C and hasnt risen since taking armour.
I think that your high rT3 is blocking your T3, lowering body temp.
To resolve rT3, one should be taking T3 only, no T4, so Armour is not the right thing for you now. There are other rT3 actions to take as well.
check out thyroid-rt3.com