Could I have hypothyroidism?

I have been feeling dreadful for a really long time: very tired, extremely dizzy, nauseous, poor sleep, night sweats, lightheaded particular and notable after every meal; terrible balance problems, sensitivity to heat - often chilly then sweaty.

I have had a plethora of test results and take some steps in light of these but very little is helping:

B12: Very low but not quite deficient - hovering at around 200 ng/l when the NHS says deficient is 197. I have been having private B12 injections but do not feel any better on them.

Vit D: deficient: now raised levels using D supplements

Magnesium: borderline deficient - now taking daily magnesium (chelated) and do not feel much better;

Sodium: high normal;

Calcium, Potassium: normal

Ferritin: 99 ug/L [30.0 - 400.0]

Folate: 4.9 ug/L [3.89 - 26.8]

Blood pressure: normal

TSH: 2.31 miu/L [0.3 - 5.5]

Serum glucose level 5.0 mmol/L (taken before I had eaten anything that day)

I am at such a loss - What is so wrong with me? Notably, no T3 or T4 test taken but I am ordering these tests privately.

Is my TSH normal? The Doc says so but my mother has underachieve thyroid.

PLEASE HELP!!!

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CB you may want to delete this post as you have a duplicate up currently

X rusty