It seemed odd but I assumed it was just a light period (
no pain or anything unusual like that). This month, my
period is late--only by 2 days, but in light of the weird period from last month I took more notice. I have had unprotected sex using the withdrawal method (reliable... I know...) along with birth control pills with fairly consistent use--I wouldn't describe it as "perfect" use, but it's rare that I miss.