As Big_Tymer stated, you're better off taking the d-bol consistently. Read up on the d-bol steroid profile (great websites everywhere with this info) and pay attention to the section on dosage and estrogen control and post cycle therapy (PCT).
I'm new to this myself (2nd cycle) and reading the profiles helps a lot.
D-Bol and most steroids, in my experience, are like creatine in one way....you have to consistently use them to receive the full and sometimes any benefits at all.
Also, for less toxicity (to liver) and as a good starter 1st cycle, take test only initially. You'll tend to likely keep more of your gains with test only, as opposed to d-bol only, since more of the gains will be not just water weight and bloat....assuming you proper control your estrogen during your cycle and do proper PCT (again, lots of info on these topics on steroid info sites).
Be careful.