Only one way to find out

Just like aggieguy said, get some ralox man. Don't even bother trying nolvadex, just spend the extra $ and get ralox. It works way better and has less side effects also. Don't spend $ on another cycle until you buy ralox to take care of the gyno. The gyno only gonna get worse and worse if you keep running cycles with it

Just throwing this out there, if it is temporary gyno then Raloxofine will get rid of it. If you are going to run a cycle have an Ai on hand like anastrozole then also have raloxifene or a serm to prevent the gyno in breast tissue..
https://www.eroids.com/forums/general/general-talk/serm-vs.-ai-for-noobs

I wanna add one more thing to this, I was only giving options to what you could do to help protect your gyno from getting worse by mentioning other compounds. If you don't wanna play with other compounds then disregard what I said. I just don't want you to feel like I am trying to entice you to use anything else other then the Test alone, But I would still keep a SERM and AI on hand while you are increasing Test dosages as a just in case backup.

I have never had this issue before, but if it was me I would start low and slow with the Test. Good thing you are already on TRT, so you should already know your baseline e2 at your current TRT dose and how your nipples feel. When you start the cycle taper your Test dose up by 100-200mg more then your TRT dose, I would also add in Masteron since it masks e2 problems selectively within tissue (tits). Let this new Test dose ride for about 5 weeks and get some blood work done to see where your new e2 levels are at. If you don't wanna run Masteron you can always add in Eq or Primo to help reduce systemic e2. Eq is a suicidal Inhibitor, and Primo competes with the Test at the aromatase enzyme. Primo tends to not be so aggressive with lowering e2 as the Eq is, and this is just cause how the compound interacts with the aromatase enzyme.

All I am trying to say though is to go slow, and to be honest with how you feel with symptoms. The gyno wont blow up overnight, you have time to subvert growing issues. Make sure you have a SERM (Tamoxifen) and a AI (Exemestane) or (Arimidex) on hand regardless of how you wanna play with anabolic compounds and their ratios.