Ok, this post makes a lot more sense than the other thread you started.
First off, take a deep breath and chill...second, call Defy on Monday and get all the answers to your questions.
It's a known fact that TRT can cause polycythemia (increased H&H production above safe/normal levels). Since you mentioned that blood donation/therapeutic phlebotomy was a non-player because of a ferritin deficiency, maybe Dr. Saya took you off the Test to prevent any further RBC production. Relax, and ask him on Monday.
The HCG and the Clomid should help your body to continue to produce its own testosterone, in the absence of the exogenous test (by injection). It may not keep it at the same level as the test injections, but your HPT axis won't shut down completely like it would if you stopped everything cold turkey.
Lastly, the Cabergoline is a dopamine receptor agonist. It reduces the amount of prolactin released by the pituitary gland.