My period started out heavy as normal (red), light bleeding the next day, then almost no blood at all. now, just brown spotting. ive taken 3 plan b pills in the same cycle. could this be pregnancy? or is it just side affects of plan b on my period?

Plan B affects hormonal balance but does not always result in bleeding. If you have concern about pregnancy, do a home pregnancy test 3-4 weeks after sex. If you do not wish to be pregnant, use contraception all the time, every time. Consider implanted contraceptive, or IUD. Practice safe sex. https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines Get HPV vaccine,