Will i get irregular periods after using emergency hormonal contraception?

Yes: It is common to have irregular bleeding and spotting after use of emergency hormonal contraception. Your next period may not be at the expected time. This should resolve within a month and periods should then go back to normal.

Possibly: Potential side effects with emergency contraception can include: tender breasts; changes in menstrual flow (spotting, bleeding, early or late period); loose stools; dizziness; headache; nausea/ vomiting; abdominal discomfort or feeling tired. If you develop chest tightness, difficulty breathing, swelling of lips, mouth, throat – call 911. Notify your doctor if you miss your period.