It is possible to become pregnant after having unprotected sex, even if birth control pills were stopped recently. While it is common for fertility to take some time to return to normal, once birth control is discontinued its protection can no longer be guaranteed.
After stopping birth control pills, hormones are gradually cleared from the body, and menstrual periods usually return within a few weeks. However, in some cases, fertility may take up to three menstrual cycles to return to normal.
For a clearer idea of what are the chances of getting pregnant after stopping birth control, it is important to see a doctor for an evaluation. A medical visit is especially recommended if menstrual periods are delayed for more than three months.