The dmz set you up for a weak libido, and the Novadex XT contains ATD, a strong AI. It contains too much of it. Basically it crushed your estrogen completely which in turn crushed your libido. You need SOME estrogen to support libido.
If you don't have any other testosterone booster on hand, keep taking the Novadex at HALF the daily dose you're currently taking. Yes, if the bottle says take 2 a day, take 1.
In the mean time, order some Reversitol V2 or SuperTest to finish out your pct, and look into using some DAA as well for instant libido fix.
Btw...I really hope you have some pct support supps too like Post Cycle Support, or at least if not an all in one you would have milk thistle, hawthorne berry, saw palmetto, and some antioxidants to keep the damaging effects of a powerful oral steroid like dmz to a minimum.
If I were you, I would stop playing around with ph's til you're at least 21.