Taking an emergency contraceptive pill when you are unsure about pregnancy is generally safe, but it can cause temporary side effects like nausea, headache, dizziness, breast tenderness, or changes in your next period (early, late, heavier, or lighter). If your period is delayed by more than a week, take a pregnancy test and consult a doctor.

Duoluton L Tablet is a combined oral contraceptive that is effective only when taken regularly. Irregular use reduces its reliability in preventing pregnancy. Since you had unprotected sex while taking the tablets irregularly, it is appropriate and safe to take an emergency contraceptive pill as soon as possible. Afterwards, continue your regular contraceptive regimen and consult a healthcare professional for guidance to ensure proper use and effective contraception.