TRT, PCT, HPTA Restart and a CYCLE!

[Boater]

So, to make a long story short I was put on TRT a couple of years ago mistakenly. The Doc was unfamiliar with it, her testing protocols were unreliable, and I exhibited none of the symptoms of low testosterone. I went with it because hey, sure I'll take a script for testosterone. I did feel exceptionally well for quite a time, but now I'm certainly worse off than I started. My current, better Doctor agreed with an HPTA restart, but have not begun it yet. No problem - HOWEVER, I'm also interested in doing a 12 week test/dianabol cycle (I have never cycled before). My question: Could doing a cycle now, before I"m off trt, be detrimental to my chances of a full HPTA recovery (to pre-trt levels)? I'm I going to nuke my nads? Currently on and HCG/test trt regime. Would really like to cycle now, but worried about repercussions with my HPTA restart.

Also, what could be the cause of sudden low libido? Lost it about a month ago and no sign of return. Even bumped up my weekly injection of T a bit, but no go.

Any help would be greatly appreciated.

Guy