You gotta promise not to be a dope next time k?
Here is what I do for Deca:
Nandralone has such a long ester and half life (stays active in your system for up to 18 months) that it requires, at least in my experience, a longer PCT. Normally for like a 12 weeks of test and say Tren enth I could wait two weeks then run PCT for two weeks and probably get away with not even using HCG if I took tribulus or something. BUT! With Nandralone what I usually do (and I realize this first part wont apply to you cause you didnt run any test

but I run test for two more weeks after the Deca ends. So if I have a cycle of 12 weeks, I only run the deca for 10. Then after I finish the test I wait two weeks for it to break down. THEN I start my PCT for FOUR weeks. 20mg of Nolvadex a day and 500iu of HCG every other day for two to three weeks of that. (I say two to three weeks because Ive found I can feel when my balls are kickin in again so I judge it by the feeling)
Now, HCG is just as finicky as Deca (good job, you really did pick a hard one to **** around with) because if you take too much you'll actually continue to shut down your system and your PCT willl be worthless. If you take it without an estrogen blocker you'll shut down your system.
So, now you know. Don't feel too bad either. Everyone makes mistakes. I bet at least half of the dudes makin fun of you for this cycle made some newb mistake back in the day that they'll never fess to now. I'll tell you, my very first cycle was exactly what you just did. There's a website out there that recommends deca only as a good cutting cycle. They are way over priced (partially because they sell real human grade pharm stuff) and their selection is super low. Looking back now I cant believe what a dope I was to believe that crap. I know what I know about recovering from Deca because my PCT was too short the first time and I ended up having to run a second one a month after.

Anyway, live and learn, good luck getting your nuts back lol.