I think what Samoth is trying to say is that you clearly haven't done enough research and people are lashing at you because you acted first, then asked questions later. That could be a dangerous situation as far as AAS goes. Alot of people here have put in their time as far as research and question-asking goes. So when we get dozens of newbie questions that probably could've been answered right off the bat with a little reading, well, people get a little agitated.
The short answer to your question, yes, 20mg Dbol will make your balls shrink; it will stop your body's natural production of test; it will cause a host of other sides too (bloating, acne, etc.). There's a reason why people lecture to not do an "oral AAS only" cycle. It's hardly effective, especially in the long-run. Also, are you running any anti-estrogens? Taking liver protection? (Dbol is HARSH on the liver). If the answer is no to either question, then you should just take your beating quietly... then learn all you can. Good luck!