Hi Katymac, your thyroid function test with the raised TSH & lowish but within range T4 suggests what's referred to as subclinical hypothyroidism. I would definitely follow this up with your doctor, especially if you've had out of range thyroid results before. There is a link & extract here from the British Thyroid Foundation:-
https://www.btf-thyroid.org/hypothyroidism-leaflet#hypo5“A blood test result showing a slightly raised TSH level with a normal FT4 level indicates that you may have mild thyroid failure, also known as subclinical hypothyroidism and that you may have an increased risk of eventually developing hypothyroidism. You should have a regular thyroid function test and consult your doctor if you notice any symptoms, as you may benefit from treatment.”
The following are some of the symptoms that can occur with an underactive thyroid: abnormal fatigue, weight gain, fluid retention, puffy eyelids, difficulty getting/staying warm, constipation, hair loss, inc outer third of eyebrows, muscle & joint pain, low mood, poor memory. Some of these are not very specific i.e. can be caused by other conditions too, of course, but if you have some of them it would add to the likelihood of your thyroid needing treatment sooner rather than later.
I've had a quick look at your other thread & I see the testosterone question has been helpfully discussed there & you've had good advice. I can't add much but would just mention that low SHBG can be associated with hypothyroidism but also I think caused by too much testosterone replacement & as your T is quite high I think you're wise to reduce the dose a little.
Btw I am very long term hypothyroid, both ovaries removed & later hysterectomy, on HRT with testosterone. Sorry this is a bit abrupt today.
Wx