on September 27th I got my period, the day later had unprotected sex. the day after I took plan b and continued my period for another 7-10 days, ending on October 7-8th. which I figured was normal because there was expected bleeding. I got my period again the 24th of October, which is more than 2 weeks early and it's close to 2 weeks now and my period has continued to stay. I am a bit worried that something might be wrong or it is just that my cycle got shifted because of taking plan b.