That's odd. I was recently on 15mg of Naps, having ramped up from taking 10mg the first couple of days. I had to stop taking them after six days due to debilitating pumps.
The Deca will take an age to kick in but joint pain will start to subside pretty quickly.
Regarding "results", you'll not be getting much of anything after four or five days. Is the weight scale starting to climb? Water bloat should have begun already.