Tracey...
It 'is' an underactive thyroid symptom, even boderline can be affected... to be feeling so cold.
I was walking round in full heat summer with 3 layers on PLUS cardigan AND coat :shock:
Couldn't get warmed up despite the summer heat and was sleeping excessively, had dry flaky skin n stareing swollen eyes!
Weight refused to drop despite eating so little!
Prior to being diagnosed hypo thyroidism ...
Thyroid reacts to iodine , and iron/zinc rich foods , try eating more of these to keep your levels "UP"
As being borderline your GP may not treat with thyroxine just yet?
Feeling cold, dry skin, sleep more than usual, bulging eye balls, sluggy metabolism low energy burn rate
are characteristic symptoms...
Hope this helps.
Anna.