Thanks for the query.
After stopping the pills it will take some time for regularization of hormonal
That can lead to menstrual irregularity for few months.
Changes in the weight, dietary habits etc can also influence the hormonal levels.
If you used the condoms as per the guidelines, the possibility of pregnancy
If you have doubt regarding pregnancy, once go for pregnancy test.
If the test comes negative, the possibility of pregnancy is less.
And you may get periods soon.
If you do not get periods even after one week, consult gynecologist once, get examined and take tablets to induce withdrawal bleeding.