Can next choice cause nausea a couple days after you took it?

Yes. Potential Side : Effects w emergency contraception include: tender breasts; changes in menstrual flow (spotting, bleeding, early or late period); loose stools; dizziness; headache; nausea/ vomiting; abdominal discomfort / cramping or feeling tired. If you develop chest tightness, difficulty breathing, swelling of lips, mouth, throat – call 911. Take a pregnancy test & notify doctor if your period is 7 or > days