I took the pill for 4yrs, my doctor said no need to wait and can start straight away. But it also depends on your body - if before you take the pill you have very regular cycles and period is normal, you probably can start and get pregranet just as normal. I'm not - I waited 3 months after stopping the bill before my period came back but after almost 9 months, it's still not back to regular cycles. So, I would say just start straight away, you don't know how long you need to wait! Good luck~