Be comforted by the thought that he will only be able to hold his bladder/bowels after the age of six months, bless his little furry soul.

When our foster Lab was growing up, sometimes I'd be so busy doing something I didn't even notice (so dim of me!) that she was giving me signs she wanted to go out to pee - she'd pace a bit near the door and even sit there whining a bit. Until she couldn't hold it in anymore and let go... it was all my fault of course, being a blur Dogmum.