Somehow, one of the pills went missing from my pack and I can't remember if I maybe accidentally took 2 in one day, or one just fell out and I didn't notice. I was meant to have my last pill on Wednesday but consequently had my last pill on Tuesday and now I'm on my week break before starting the next pack. Since noticing the missed pill, I've had protected sex but had unprotected sex the week before the missed pill.

My withdrawal bleed is a day late (it's normally on time every month since being on BC which I have for 2 years now), and I'm slightly concerned. Should I start my next pack a day early? And what are the chances of being pregnant?