I was diagnosed with Graves disease in 1990 and had a sub total thyroidectomy in 1991 as it was difficult to control with medication. I have never had to take any thyroid medication since then as my test results are in the normal range but the last few years I have started to feel not quite right with symptoms of feeling very cold, low blood pressure, low pulse rate, low body temperature, tired, carpel tunnel, foggy mind and slow memory etc .
I did have a regular blood test in October and they tested my thyroid function and my only available results were these:-
Serum TSH level 3.71 mU/L 0.27 - 4.20 mU/L
Serum Free T4 level 15.3 pmol/L 10.50 -24.50 pmol/L
They do seem to be in the normal range but just wondering why I have a few symptoms and don't feel that great.
Appreciate any advice anyone can offer please