What Are The Uses And Side Effects Of Plan B Pills?

I just recently had a condom break on me.My girlfriend and I immediately got out as much as we could and went to the pharmacy to get some spermicidal gels for her to insert about 10 mins later. About 15 hours later She used Plan B onestep. We are currently trying to get a doctors appointment. Do you think that we have escaped pregnancy?



and also, would taking more than one plan B Decrease our chances of pregnancy?