Edit: I misread so you can ignore my points of view what i typed to you about trt.
Hehe I had mirth when you said in earlier post about not anything in here mattering a shit without lab results. It's true though it's always pure speculation without numbers.
You're apparently highly athletic person.
You propably feel the night shifts even more strongly than normal gym rat. Casual night shifts really doesn't make that kind of difference to you hormonally to even consider trt. If you'd always do 12 hours and get little sleep and nutrition, then for sure the end result would most likely be decrease in your testosterone production.
It's still good to understand that it is totally possible you've had a lot of hormonal imbalances even when being natural, even when gaining muscle and continuously progressing strength wise too. I've lifted most of the same weights without trt as with the trt. Diet and training program seemed to make a lot more difference, to me personally.
Trt wouldn't really help you with the night shift dilemma that you'd felt fresh and a beast. Your rest requirements and other things still needs to be adressed the same way as fully natural or you'll definitely feel it.
Also when you're not experiencing low testosterone it's very likely you would feel anything different to your current state, specially not knowing any of your current stats. You could even end up having lower testosterone value than you have naturally, you're only 25.
If you drop it however ( if you haven't used any hcg, serm, ai ) you will definitely know the difference between low and normal testosterone level.
I have experienced it when i had to change from Gel to injection.
About the gyno, it's impossible to tell.
Even the best and most expensive doctors in the world cannot tell you 100% the cause because in "lords year 2015" the development of gyno is still not fully understood. Also, you would have to have labs from seriously long period of your life.
We know that hormonal imbalances are one reason, and most often is the case with our forum users. Other reason widely accepted is overweight. These are just the main few causes out of many possible. If you've been overweight and had drastic change, that could be the cause. But as i said it's impossible to tell I could copy paste you a lot of possible reason but then you really would have to go by "pick one" ideology and it might not have been the reason.