My period is 3 days late and i have no discharge, yet i didn't have unprotected sex, i just finished my first pill package. ?

Unlikely: If you men that you just finished your first "pill package" of Birth Control pills this may affect your period. If you did not have unprotected sex it is unlikely that your are pregnant. You are RIGHT in using another form of Birth Control during the FIRST cycle of BC pills. You are now ...with your SECOND cycle of pills protected from pregnancy ( but NOT STD'S!!!!) Hope this helps Dr Z

Effect of the pill: This is probably related to starting the pills. If you are worried about pregnancy, check a test. Don't delay starting your next pack, though.