I Used Unwanted Contraceptive Pill Immediately With In 1 Hour

i used unwanted contraceptive pill immediately with in 1 hour of our intercourse . my actual period is on 7 th of every month i used pill on 16 th in the same month. and now its 24 th im bleeding , is the my period or i should consider my actual period is on 7th of the next month ? i didnt get any vomiting sensation feeling after using the pill , i m feeling dizziness , im a pregnant is it common to bleed after 7 days of taking pill? when is my actual date of my period ? please help me. im scared .