High SHBG - Should I Worry?

This is a follow up to a post in @flash74’s thread. I don’t want to hijack it, so I’m moving it here.

I wrote:

And the indefatigable @KSman replied:

I agree that it sounds like I’m primary. My body has eunuchoid proportions (upper to lower segment ratio is 0.9, arm span is about 10 cm / 4" greater than my height), which suggests it’s something that’s not been entirely right for a long time.

I don’t know what the cause is, and I’d like to find out. Healthline has a list, but I’m not sure if any really apply.

My testes were not checked. Would it be worth arranging an examination? If so, what tests? Ultrasound?

If I stick on TRT (as per the protocol above), how long is it likely to be for natural testosterone levels and fertility to be impacted? I was considering getting the latter checked as a baseline.

Lastly, my experiences so far.

I had my first injection on Thursday 16th February, and took my first dose of Anastrozole on the Friday.

I was quite bloated on Saturday and Sunday. I suspect that this might have been water retention.

Libido picked up over the first few days, which surprised me. I’d expected there to have been a bit of a lag. But it’s been a bit like a badly tuned radio, in that sometimes it’s there, and sometimes it’s not. However it dropped off sharply on Friday, about a week after the shot.

Appetite is up a lot. I’ve been spending a lot of time at the gym, so that might be the cause.

Mood was down for the first few days, I felt very irritable, but then improved. It’s also tailed off a bit since Friday. I don’t expect TRT to cure depression, but any little helps.

I feel really sore the day after taking a dose of Anastrozole. I’m not sure if this is gym or E2 related.