Last night,

My boyfriend and I went a little too far without protection. During this we decided to stop for good measure because we've talked extensively and realize we're in no way ready for a child. He didn't finish by far, but I went and bought a generic plan b pill just to be safe and took it less than an hour after intercourse.

I'm just worried about being pregnant. I ovulated several days ago, but I just had an IUD out around a month ago so I'm not entirely sure how accurate my tracking is right now because of it being messed up from the IUD. My boyfriend isn't too concerned. I'm supposed to have my period late next week.

How likely do you guys think it is that I could end up pregnant?

(We're both dummies who won't be doing anything without some form of protection in the future. Impatience is not a virtue.)