You have to stay off the pill for at least 18 months. A few months so your body can get back in its cycle, 9 months for when you're pregnant, and a few months after if you're breast-feeding. You won't have a period when you're pregnant, so it shouldn't be too bad:)
Youre defeating your own self here as by taking the pill you can't get pregnant so until you stop the pill for awhile, a pregnancy just will never happen so you have to decide what you want most here, but being on the pill equals no pregnancy no matter how hard you try, it just aint happening