I think firstly maybe you should sit down with DH and explain you are feeling clucky, that you would like to TTC your next child sooner, and you both might be able to decide together/compromise when you both would feel right in going again. You never know, he might be more inclined to try earlier if you talk about all the reasons for and against. It's just my opinion, but I think messing with your pill to have an 'accident' is pretty dishonest, and unfair on your DH, especially since you say you haven't told him how you're feeling.

It's hard if you both don't want the same thing at the same time, but without sitting down to talk about it, and to really listen to each other, you'll never be on the same page.