I put all chances on my side generally did decree of this mistaken belief pill rhymes with immediate pregnancy. They forget that nature is at your own pace and sometimes you have to wait, there is no particular reason. It also considers the "delay" means design to 4 months after first intercourse without protection, knowing that a year of unsuccessful attempt did nothing wrong, this is a period which is a sort of medium that can, for example, be extended by a hormonal imbalance, which may especially be induced by stopping the pill. Besides, if some get pregnant almost immediately, others may instead see the months pass without any sign of pregnancy, an agonizing wait but has, in principle, nothing alarming.
