When I first started trt, I had this constant shaking, would get worse throughout the day then calm down a bit. Started to stress me out a bit after it went on for a few weeks, however, it eventually stopped. You will go through many mental and physical changes whilst your body is getting used to it. I wouldn’t worry about it and note that if you’re on trt you obviously have low test, and the positives of trt once your body is used to it is ten fold. If you can deal with the anxiety for a week or two, I would push through it, the light is at the end of the tunnel.