The truth is, there are some guys out there that never have done a PCT. Furthermore, back in the day, some of the drugs we have now didn't exist and guys never did PCT. I wouldn't say that means no one should. In fact, I would suggest you do. The main purpose of PCT is to get your body back online as fast as possible, producing natural test and preserving the gains you made on cycle. The way I see it, we work so hard for our gains, why not do everything we can to keep the muscle we've developed. I don't think that PCT has to be complex and I don't believe that taking more PCT drugs will necessarily make you recover any better or any faster, than taking a simple straight forward PCT. Using HCG on cycle at a low dose is one thing that can really make a differecne in recovery speed, IME. Then taking a little clomid or nolvadex for a few wks can help get you back to normal faster. You don't have to go crazy with the SERMs and you don't need to stack them in complex ways.
Are you infertile? I can't answer that question. I might be able to make a better guess, if I had a better idea of how long you've used and how hard you hit the gear, but no matter what, I'd still just be guessing. The only way to know for sure would be to go to a clinic and deposit some of your boys into a cup. For the most part, I've seen guys recover their ability to reproduce, even when they have hit hard cycles. If you can't, there is help for you. Dr's will have you take the same drugs we use for PCT, HCG and clomid. I have also heard good things about HMG, Human Menopausal Gonadotropin but have had no personal experience.
As for your injectable dbol, great stuff. I used Geneza's injectable dbol in my off season last year, in what turned out to be a great year for new growth. I'd like to run it again some time this year. You will want to dose it ED. You could use .5 to 1cc ED, dending on the dosing you are used to. I don't find that it gives any added effect when taking it preworkout, but after about 7-10 days, you should see a pretty noticable differecne. I believe that the injects are Mg for Mg, stronger than the oral and with no sides on my appetite