i always have my periods 2 or 3 days before my date.my bf rub his privates over mine but not penetrate

i always have my periods 2 or 3 days before my date.my bf rub his penis in vagina but not penetrate in just 5 days before my due date.i had ipill before 33 hours.now its day 6 after rubing.and still i dont have my periods but little spotting (3-4 drops).is this delay due to pill or am i pregnant?