Pregnant??

I took the morning after pill 3+1/2 weeks ago when my period was due any day. My period came 5 days later and only lasted one day and usually lasts 5. Waiting for my next period but am worried incase I am pregnant. Any advice???

Did you read the box instructions??? Beacause I took Plan B and it said that I was supposed to expect my period I believe it said 5 weeks after, and the best chances of any contraceptive pill working must be taken within 72 hours after unprotected sex and after that, well the period should've lasted like any other period, 4 days, 5,...etc. I mean for the period to last one day, sounds kinda odd but you should really buy a home pregnancy test just to be extra sure..hope I helped