Im new to bc & just got off my first period cycle. i took 7 active pills & was on my 8th day when i had sex. he withdrew but could i still be preg?!

Pregnancy unlikely: Birth control pills work quite well. If still worried, one can do a pregnancy test. A urine pregnancy test done correctly gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and therefore lead to a repeat test.