I took the morning after pill 24 hours after sex and started what i think is my period a week later. my period was to early and i now feel really sick, could i be pregnant?

Take HPT if late.: This may not have been your period. These may be side effects of medication. Emergency contraception symptoms can include spotting or bleeding, changes in menstrual flow or your period may be late or early. It can also lead to nausea, abdominal pain, breast tenderness, dizziness. If your period is more than a week late take a home pregnancy test and follow up with your medical provider / gyn.