When my boyfriend and I had sex, the condom broke and so immediately after that: we called CVS to get a Plan B and we picked it up. I took the pill once I got out of the store and it was around 30-40 minutes after the condom broke. I had my period a few days ago (my period started on the 22) and my period is a little bit irregular because it does not fall on the same day every month (it's maybe off by a few days). I was wondering. what my chances of being pregnant are.