L.R.
My son was 3 when he stopped diapers completly. However he did the same thing.I would ask and ask about going potty and he would say no. Then when he had to go at that second he would let me know. I think develomentaly they do not pay any attention to the early feeling of having to go and think that when its time to then let you know. Neesdless to say he had many accidents and was wet almost every night until he was 6. He is now 14 and we laugh when we talk about the "old days"Just be patient and dont make him crazy, otherwise you can end up with other problems.